I wish I knew enough to call CPS

so my gf's family on her mom's side is REALLY homophobic like her cousin came out as lesbian and nobody has heard from her in months. her mom and sister still go to family gatherings, but no one has heard from/about the cousin. and nobody dares ask. there is a rumor going around that they are making her stay home and do chores to "womanize" her, and she's not even allowed to sleep on her bed anymore