It’s a bad spot for the niece. Let it go and China possibly slips in and she possibly grows up in hell the rest of her life
Or
All of this inappropriateness comes out (not saying he touched her, but he was nude and on crack around her), she will have to deal with words and probably need counseling, but very little risk of getting killed, beaten, starved, etc. she is an innocent and can get help. CCP will do nothing for her.
Horrible situation. I really feel for her and hope she can get the hell away from all of them before they damage her mind beyond all repair.