Hi Paz23
I've just very briefly answered another post by Karine T on this very topic.
If your friend is on the progesterone only pill - this stops ovulation and periods so menopause ( ie ovarian failure) will continue to happen in the background, and there will come a time when the decreased oestrogen may well cause symptoms and she will be suffering from the effects of this as well as too much progestogen.
How old is your friend ( not that age is a determinant of menopausal status) but if she is in 50s would indicate peri-menopause is likely?
In addition one of the POPs - Cerazette I think - actually reduces oestrogen levels so long term use could make symptoms worse.
It sounds like your friend may benefit from proper HRT? Maybe encourage her to join this forum amd we can help her?
Hurdity x