It's been 18 days since Victoria Stafford has disappeared but people living around her Woodstock, Ont. town are holding out hope that the eight-year-old will be found safe.

Crowds of people gathered in London's Harris Park Sunday afternoon to release hundreds of purple balloons in a vigil for the little girl who was affectionately known by friends and family as "Tori."

The vigil was held the day after the U.S. crime show America's Most Wanted aired a segment on Victoria's disappearance.

Victoria's mother told CTV on Sunday that she wants everybody to do what they can to get the word out about her daughter.

"Keep sending emails to wherever, send balloons to wherever, do whatever you have to do to keep it going," she said.

The child hasn't been seen since April 8, when she left school property with an unknown person.

A surveillance camera posted near her elementary school captured the girl with a person police believe is a young woman.  Police have not been able to identify the person despite receiving more than 1,000 tips from the public.

A composite sketch released last week yielded more tips but police have yet to name suspect in the case.

"I'm tired. Extremely tired," said Victoria's father Rodney Stafford. "I'm frustrated, angry, sad...I don't know."

Ontario Provincial Police have continued to search for the girl in Woodstock all weekend, hoping to find a new clue in the case.

With a report from CTV Toronto's Ken Regular