Victoria Stafford's school photo, taken April 7, the day before she disappeared in Woodstock, Ont., with a woman in a light-coloured coat. (Tara McDonald and LifeTouch/Canadian Press)

Oxford County police offered a $50,000 reward late Tuesday for information leading to an arrest and conviction in the abduction of Victoria Stafford.

The eight-year-old Woodstock, Ont., girl, known as Tori, has been missing since April 8.

Footage from a surveillance camera showed her leaving school with a female.

Police subsequently released a composite sketch of the woman, who is described as being in her twenties, wearing a white or light-coloured coat and blue jeans. She has dark hair tied in a ponytail and is approximately 5 foot to 5 foot, three inches tall with a medium build.

The investigation into Tori's abduction is continuing, the Oxford Community Police Service said in a statement late Tuesday.

The search includes door-to-door canvassing within the city of Woodstock, about 140 kilometres west of Toronto,

The OPP Emergency Response Team was combing through the Oxford County Landfill Site east of Salford Tuesday.

Officers are also searching vacant buildings and properties, as well as abandoned vehicles, within Woodstock.

Meanwhile, Tori's mother recounted her mysterious journey in a limousine to a Toronto hotel room last Thursday where a stranger offered to help with any ransom demands for her missing daughter.

Tara McDonald said she assumed when the limo arrived at her Woodstock home that she would be meeting with a psychic from the Montel Williams daytime talk show.

Instead, McDonald met with someone who warned her to consider offering to pay a ransom for her daughter's return because when that person had been in a similar circumstance, police advised against paying and the person's child was killed.

She said the person, who she did not identify, happened to have a stopover in Toronto and saw a story about Victoria's case on TV.

While McDonald acknowledged that the meeting might sound strange, she said many weird things have happened since her daughter disappeared.

Police have not reported receiving any ransom demands.