I don't believe Kascha ever fucked anyone except François (her boyfriend) on camera. There's one film from 1993, at the end of her career (when the fake boobs had really begun to look shopworn), in which she does a scene with Jon Dough, but as far as I can tell, it's a handjob only (and not even really that; she masturbates while he jerks off, and barely touches him, if at all). That film, if anyone is interested, is Bashful Blonde from Beautiful Bendover (a truly terrible title, attempting to parody a 1949 Preston Sturges title...ugh!)