My sister has told me that her 15 year old (who started her periods about 18 months ago) flatly refuses to use sanitary towels, and instead makes pads from toilet paper. She then insists on flushing it down the toilet, which on two occasions has resulted in her having to call a plumber.
My sister has talked repeatedly to her about this, supplied her with every type/brand of towel on the market, but my niece just says they are all uncomfortable, and continues to use toilet paper. She assures her Mum that she is using towels, takes them out of the packets, and hides them all over her room. This results in her underwear becoming soiled, which she also hides all over her bedroom.
I have offered to talk to my niece, but her Mum feels that her daughters' trust in her will be destroyed if she finds out that her mother has told me. My sister is in despair about this, and I would appreciate any advice/comments. Thank you.