Yeah icl like how is this gonna go once the mum finds out unless she already knows

there's no way a woman like that doesn't know already

I'll suspect she knows when the mother doesn’t seek sexual pleasure from Yeonwu anymore.

Ohh same her! But knowing how twisted her mom is and she likes to punish Yeonwu with drugs and rough plays...Maybe instead of not touching him she will go all out instead and try to ruin him...
After all Rosa said that her mother is kinda similar to her and we know she has a dark side.
I mean the mother treats Yeonwu like her pet not even as a human let alone husband...
Them playing home is like a game to her and clearing levels...
Cause remember how she treated him when Rosa stayed out the night and showed discomfort? She drugged Yeonwu, was rough with him and asked him to work harder on getting on Rosa's good side and become the perfect family...
So yeah she is very controlling even towards Rosa cause it was mentioned that her schedule is managed by mom and now even the internship is mentioned by her. It's like she is a doll herself when it comes to her mother. Everything has been planned out in her life since day 1.
Although the most disturbing thing about her mom is how she got together with the orphan from the orphanage she was sponsoring since Yeonwu was a child and the fact that she knew and was involved as a VIP in that shady sex trafficking club with boys like Yeonwu selling off themselves to ajhumas like her.