A Pennsylvania woman discovered at age 46 that her entire identity had been a lie after police told her she had actually been kidnapped by her own mother as a toddler and had been missing for 43 years.

The astonishing case came to light after investigators tracked down Michelle Marie Newton, who had spent most of her life believing she was Amanda Blake.

The revelation came following a decades-long search that began when she vanished from Kentucky in 1983 at just three years old.

Michelle's mother, Debra Newton, was arrested in Florida last year after authorities alleged she fled with her daughter and built a new life under an assumed identity.

The breakthrough led to an emotional reunion between Michelle and her father, Joe Newton, who had spent more than four decades searching for the little girl he feared he would never see again.

But while Michelle has finally recovered her true identity and reconnected with the family she never knew, the extraordinary case has left her grappling with a lifetime of deception and disappointment.

Earlier this month, her mother received a suspended sentence and, according to Michelle, has yet to apologize.

The shocking truth was revealed to Michelle last November when police arrived at her Pennsylvania home and informed her that she was not who she thought she was.

Earlier that day, her teenage son had called to say officers were waiting at the house.

Investigators revealed a secret that had been hidden for more than four decades.

'You've been missing for 43 years,' Michelle recalled being told. 'You're not Amanda, you're Michelle Marie Newton.'

The revelation instantly answered questions that had plagued her for much of her life.

'It was the most surreal thing ever. I remember crying but also being numb,' she said to People Magazine. 

'My life has been such a mystery to that point and there's been so many things that didn't make sense that everything in that moment clicked into place.'

For years, Michelle had sensed that something about her past did not add up.

Family stories were vague. Questions about relatives were met with evasive answers. Important documents were difficult to obtain and even basic details about her childhood seemed shrouded in mystery with few photos of her as a child.

By the time she was an adult, she had begun conducting her own investigation into her background, compiling hundreds of pages of notes and records in an effort to understand who she really was.

'It felt like listening to someone else's life, like a movie, this can't be right,' Michelle said of the moment investigators explained the case to her. 'You must have the wrong person.'

According to authorities, the story began in Louisville, Kentucky, in 1983.

Michelle, then known as 'Shelly' to relatives, was living with her parents Joe and Debra Newton.

Family members said Debra announced she had accepted a job in Georgia and left ahead of the family move with three-year-old Michelle.

Dad, Joe, had planned to join them later after finishing work commitments in Kentucky, but after an initial period of contact, communications suddenly stopped.

Joe traveled to Georgia searching for his daughter but was unable to find her. As the years passed, law enforcement investigations failed to uncover where Debra and Michelle had gone.

Authorities eventually filed custodial interference charges, and Debra became one of the country's most sought-after parental kidnapping suspects. But the trail went cold.

The case lingered for decades as relatives chased leads, often fearing they were no longer searching for living family members.

Joe never stopped hoping. 'She's always been in our heart,' he previously told WLKY.

The breakthrough finally came after renewed efforts by investigators and the National Center for Missing and Exploited Children.

Age-progressed images showing what Michelle and Debra might look like decades after their disappearance. A tipster in Florida believed they recognized the pair.

Investigators compared photographs, gathered DNA evidence and eventually traced Debra to The Villages retirement community in Florida, where she had been living under the name Sharon Nealy.

Body-camera footage from her arrest captured the remarkable moment authorities finally caught up with her.

Standing outside her home speaking with a neighbor, Debra (known as Sharon) appeared relaxed as officers approached.

'Uh oh, they're coming for you, Sharon!' a neighbor joked.

'Not for me!' Debra replied.

Moments later, officers informed her they were indeed there to arrest her.

'I don't understand,' she said.

Later, as she was placed in handcuffs, she insisted: 'I didn't do anything!'

After her arrest, Michelle learned investigators had found her living under a different name in another state and that she had spent virtually her entire life unaware she was at the center of a decades-old missing-person case.

After learning the truth, Michelle climbed into her car and drove from Pennsylvania to Kentucky to meet relatives she had never known.

Waiting for her was the father who had spent 43 years searching for her.

'I can't explain that moment of walking in and getting to put my arms back around my daughter,' Joe told WLKY. 'I wouldn't trade that moment for anything.

'It was like I was seeing her when she was first born. It was like an angel.'

For Michelle, the connection was immediate.

'There was an instant comfort,' she told People. 'We're pretty much inseparable at this point.'

Joe said there was one thing he wanted his daughter to understand above everything else.

'The first thing I told my daughter, I wanted her to know I never abandoned her,' he said.

The reunion also introduced Michelle to a huge extended family she never knew existed.

Relatives began sharing pieces of a childhood she had been denied, including stories, keepsakes and memories that had been preserved for more than four decades.

One treasured item was an Easter basket embroidered with the nickname 'Shelly' that relatives had intended to give her as a child in 1983.

But while Michelle has found her family, she remains estranged from her mother.

On May 15, Debra Newton received a suspended one-year prison sentence after accepting a plea agreement that reduced the original felony custodial interference charge to a misdemeanor.

Michelle said she was deeply disappointed by the outcome and said her mother left the courtroom without making eye contact. The pair are no longer speaking.

Michelle says her mother promised to apologize but has not yet done so.

Today, she is reclaiming the identity that was taken from her more than four decades ago.

Michelle has embraced the name she was given at birth now the mystery has finally been solved.

'I think the identity crisis happened growing up, that was when I didn't have answers,' Michelle said. 'Everything went back into perspective when this unraveled, now it's about sorting through what's true.

'Every day I get a little more grounded and secure in who I am.'