The escort grandmother of X Factor reject Katie Waissel claims the music wannabe has "ruined" her career.
Sheila Vogel-Coupe, 82, who also starred in a hardcore pornographic film, said it was Katie who had damaged her work rather than the reverse.
The octogenarian also denied she was a prostitute during an interview on ITV1's This Morning - but admitted charging for "other things".
Sheila's escort work - and porn film appearance - emerged when her relative was riding high in the competition. She also posed in lingerie for a magazine on the back of her notoriety.
She blamed Katie's quest for musical success for putting her escort work in the public eye.
"This all started when Katie joined the X Factor," she said.
"She has ruined my career. Yes, I'm afraid she has."
She added that her "private life" had nothing to do with the rest of the family.
Explaining her work, she said: "I'm not a prostitute, I'm an escort... I go out with gentlemen and I attend the opera with them, I go out for dinner with them, but I'm not a prostitute.
"I do charge them yes, for my time. During my time we may just sit and talk, we may go out for dinner, we may go to the cinema, and we might do other things, yes."