Faatien Le Jardin, a social worker for Merton's Children in Need team in south London, allegedly told the mother that she should leave the country to prevent her children being placed with English foster parents who "would make them Christian" (Daily Telegraph).
Ms Le Jardin is currently being investigated at a hearing of the General Social Care Council over a number of charges.
Speaking for the GSCC, Paul Raudwitz told the hearing that Le Jardin, who joined the team in 2002, "did not work sensitively with children to whom she was responsible", adding that she was "not always honest and trustworthy".
"She did not work in partnership with childrens’ parents and acted in a disrespectful manner by failing to keep the few appointments she did make," he said. "She accused people without sound factual basis and was entirely unmanageable."
He alleged that Le Jardin was overtly racist to black colleagues and families she was supposed to be helping, claiming that "she made derogatory and insinuating comments about them."
Following an investigation by another social worker it was reported that she had lied about a 14 year old girl, claiming to the mother falsely that she was pregnant when she had merely put on weight. She is also suggested to have helped the mother pass a drugs test by using a urine sample from her sister.
Ms Le Jardin has since had a nervous breakdown and now lives in Saudi Arabia.