A second mother linked to Sydney dance teacher Grant Davies has been convicted after she allowed him to allegedly groom her young daughter.

The West Australian woman was charged after online conversations were handed to police between Mr Davies, the mother and the girl.

It was understood the woman was given an eight-month suspended sentence in a Perth court this year.

Documents before a Sydney court said Mr Davies was grooming the underage Perth girl with ‘‘the obvious acquiescence of the child’s mother’’. The conversations were discovered by Mr Davies’ wife, Lisa Ricketts, who believed her husband was having an affair and handed his computer to police in May 2013 after she allegedly found the chat logs.

Details of the Perth mother emerged after a Sydney woman appeared in court last week after pleading guilty to taking naked, lewd photos of her two daughters and sending them to Mr Davies.