Police have released a composite sketch of the mystery woman believed to be involved in the abduction of Woodstock, Ont. girl Victoria Stafford.

"I am appealing to the community to review this composite image and if anyone has any information relating to this person to please call us," Oxford Community Police Chief Ron Fraser said in a news release issued late Tuesday.

Police describe the woman in the sketch as being between 19 and 25 years old, at least 5'1" tall and weighing about 125 pounds. She is believed to wear her long dark hair in a ponytail.

Ontario Provincial Police Det. William Renton has called a news conference for 10 a.m. on Wednesday in Woodstock.

"We continue to believe that there are people in the area who have knowledge of this crime," he said in a statement. "We are urging these people to immediately come forward to help us in this investigation."

Police also say that the U.S. television show "America's Most Wanted" will be broadcasting a segment about the Stafford case on Saturday.

Earlier Tuesday, the girl's mother issued another appeal for whoever was holding her daughter to release Tori.

Victoria Stafford's mother said Tuesday she hopes that "guilt just eats" at whoever has her daughter and is appealing to that person to release the child.
 
"I'm hoping that guilt just eats them. I hope that they see the pain and the agony that they care causing my family... I hope that they feel guilty and they just let her go," Tara McDonald told reporters.

"Go away, drop her off in a remote place and go so you don't get in any trouble. I think that's awful to say as a Mom myself because what if they do it again? But if that's what gets my daughter back and they figure out later on who it was from my daughter, then fine."

Surveillance video taken on the afternoon of April 8 showed Tori, walking away from her school with a woman in a puffy white coat.

McDonald said she has watched the entire video, which ends with her daughter walking in front of a local nursing home.

She said the video does not show where Victoria goes from there.

McDonald said police have told her that they have little to go on to help them with their investigation, which she hopes will soon extend beyond Woodstock.

"We have that video and that's the problem. There's not much more to go on than that. They can't create leads," McDonald said. "They're going on what they have and that's all they can do. I can't expect more than that from them."

McDonald said a man who also appears in the video was a parent waiting for his son, who is seen walking into the frame.

She said police have interviewed her friends, past acquaintances and people she hardly knows.

Wearing protective gear, the Ontario Provincial Police officers combed the local dump Tuesday, in the second day of their search through the town's garbage.

Using an excavator, they moved 17 tons of garbage in the search for evidence.

"They're not looking for her, per se, they're looking for clues to find her," McDonald told reporters.

But after almost two weeks since the third grader went missing, Victoria's grandfather said it's getting more difficult to stay positive.

"Everybody's heart begins to pound because we don't know if it's going to be a good or bad call," said Jim McDonald.

On Monday, the family announced that a tribute to their daughter is scheduled for May 2. It will kick off with a motorcycle ride, followed by a barbecue and small concert.

Funds raised at the event will go toward supporting the family as they continue to search for the girl.

McDonald said Tuesday that a bank account is being set up at a local TD-Canada Trust branch.

With a report from CTV Toronto's Austin Delaney in Woodstock, Ont.