Tanj Marie Dibbelt, 2, of Grande Prairie was killed last week. (Supplied Photo)

EDMONTON - A distraught single mother says she's struggling to cope with the slaying of her two-year-old daughter.

"She was with me every day for two years," said Jessica Dibbelt, mother of Tanj Marie Dibbelt, who was killed last week. "I was a stay-at-home mom. So my life has been completely flipped upside down."

Dibbelt said she lived for her daughter.

"I still haven't made sense of what's going on right now. I don't know what's happening at all."

The tot was found at a Grande Prairie residence at 11:30 p.m. Tuesday, said RCMP, who have charged a 25-year-old man with second-degree murder.

The girl was suffering from "extensive and critical injuries," said cops.

Tanj was taken to Queen Elizabeth II Hospital in Grande Prairie, then sent to the Stollery Children's Hospital in Edmonton on Wednesday.

She was taken off life-support at 2:15 p.m. Thursday.

Tanj died shortly after, said police, who didn't release details on the nature or cause of the child's injuries.

"All I can say is my daughter was the perfect child ... She was an angel, she truly was," said Dibbelt, who plans to set up a trust fund to help pay for a memorial service.

"She's missed by many people. I just don't see anybody purposely hurting her.

"She was a sweetheart. She loved to share. She didn't like watching TV, she'd rather be playing with someone."

Friend and former neighbour Jessica King echoed the sentiment, saying her daughter and Tanj, who were the same age, were great playmates.

"She was a very happy little girl. She definitely was a mommy's girl," said King.

"I used to babysit her, and her mom would leave and she'd just be so upset."

Charged with second-degree murder is Herbie Giroux of Grande Prairie. He was arrested on Friday. He's scheduled to appear in Grande Prairie provincial court today.

Friends said Dibbelt and Giroux were in a relationship, though it's not known if they were still linked at the time of the slaying. "I have no comment on Herbie Giroux at this time at all," said Dibbelt.

She also declined to talk about the night of the slaying.

"There's really not much to say until court (today)," she said.