This sounds very credible. The Guardian reports:
...[F]urther allegations against him were broadcast on French television on Sunday night.
A local official of the Socialist party claimed that Strauss-Kahn had attacked her daughter, who is goddaughter to Strauss-Kahn's second wife, in 2002.
Tristane Banon was in her 20s and writing a book when she approached Strauss-Kahn for an interview in 2002. In a TV programme in 2007, in which Strauss-Kahn's name had been bleeped out, Banon allegedly described him as a "rutting chimpanzee" and described how she was forced to fight him off. "It finished badly … very violently … I kicked him," Banon said. "When we were fighting, I mentioned the word 'rape' to make him afraid, but it didn't have any effect. I managed to get out."
Banon consulted a lawyer, but did not press charges. "I didn't want to be known to the end of my days as the girl who had a problem with the politician."
Banon's mother, Anne Mansouret, told journalists on Sunday night she had dissuaded her daughter from legal action because she believed Strauss-Kahn's behaviour had been out of character and because of close links with his family. "Today I am sorry to have discouraged my daughter from complaining. I bear a heavy responsibility," she said.