Published: May 14, 2014 6:18 PM EDT
Updated: May 14, 2014 6:20 PM EDT

FORT MYERS, Fla.- Only WINK News has learned the baby sitter of a 3-year-old boy killed while wrapped in a blanket, will spend 20 years in prison. Donella Trainor pleaded guilty to aggravated manslaughter of a child. 

"I'll never see him again, and I'll never hear him tell me he loves me again," said Samantha Mcmullen, the victim's mother.

Michael McMullen died in October 2013.

Wednesday, his godmother, Donella Trainor, plead no contest in his death.

Deputies say Trainor wrapped him in blankets, tied the ends with rope, and left him struggling for hours, as a form of discipline.

Trainor will now spend 20 years in prison.

Samantha Mcmullen spoke exclusively with WINK News, hours after the plea deal was sealed.

"20 years isn't long enough for the loss of a child," said McMullen.

McMullen says to this day, she still doesn't understand what happened.

"She was a family friend for many many years, it's hurt me either way you look at it," said McMullen.

She was at work, as her son allegedly tried to break free.

"I just remember that smiling happy little boy telling me he loves me and playing with brothers and sister," said McMullen.

McMullen says Trainor was her best friend, and Wednesday's plea was hard to accept.

"Losing a child, that is something you will never get closure from. That's something you can never fix or repair or make better," said McMullen.

But she'll keep looking forward, in memory of Michael, and for her four other children.

"I'm focused on my children, and maintaining a strong family bond between us," said McMullen.

Trainor's 20 year prison sentence will be followed by 10 years probation.

She cannot have unsupervised contact with minors.

Michael's grandmother, Gale Watkins, and stepfather, Douglas Garrigus are also charged.

Deputies say they did nothing to help the boy as he begged to be released. They are behind bars, awaiting trial.

McMullen says she has talked to them, but has never asked them about the night Michael died.