oxenberg says india also revealed she had not menstruated in a year.erned, oxenberg tried an intervention. >> i said, darling, i believe you're brainwashed and she said im not brainwashed and i said yes, you are and she said no, i'm not. so it's like we didn't get anywhere. >> reporter: oxenberg says her daughter denied having sex with keith raniere. but did admit she was branded. >> i said try to convince me that this is a good thing and she said its character building shes over 18 so legally there's nothing i can do. >> reporter: in a letter posted on the group's website raniere says "there is no merit to the allegations that we are abusing, coercing or harming individuals." raniere says that secret sorority is "not part of nxivm and i am not associated with the group." the letter also says "our experts say members of the sorority are thriving, healthy, happy, better off, and have not been coerced." india did not respond to our request for comment, but she recently posted on facebook a public rebuke to anyone questioning her condition. saying "i'm ab