The death of the Alabama woman who was 'accidentally' shot in chest by her boyfriend's dad has been ruled a homicide.

Whitney Robeson, 22, was shot in the chest on March 7 at her boyfriend Brandon Towers' home in Trussville, Alabama.

She died from an 'injury to left lung, heart, and aorta, due to gunshot wound of chest,' the Jefferson County Coroner's Office revealed on Friday.

The recent university graduate had just started as a trade consultant with Restoration Hardware in Birmingham, Alabama, when she was killed.

The Jefferson County Coroner's Office called the shooting accidental at the time, but on Friday declared her death a homicide.

Jeffrey Scott Towers, 54, was abruptly charged with manslaughter on Monday after being arrested without incident about 5pm.

He was released a few hours later on $30,000 bail and will face court at a later date yet to be determined.

Towers' lawyers, John Amari and Dain Stewart at Amari Law Firm, have denied he was criminally responsible for Robeson's death. 

'What happened to Ms. Robeson was a tragic event,' they said in a statement.

'While we understand that the justice system must play out, we know that the facts will show that Mr Towers has no criminal history, has been a productive and upstanding citizen for his entire life, and is not guilty of these charges.'

Robeson graduated summa cum laude from Auburn University in the College of Human Sciences interior design program.

'Whitney lived with inimitable grace; keen, quiet attentiveness and loyalty; boundless generosity and an uncanny way of always knowing just what she needed to do,' her family wrote in her obituary. 

'This marvelous, independent woman was on the cusp of her successful career in interior design: the job she had always wanted since she was a little girl watching HGTV.

'In the precious little time she had been in that role, Whitney's new colleagues and supervisor were instantly taken by her kindness, talent, attentiveness, and integrity.'