I'm very happy she is able to reflect on her past with him and didn't immediately accept his proposal or even feel joy at it. Sometimes when I read mangas, webtoons and etc. they don't allow the FL to falter / have these complicated feelinngs and that's really disappointing. This however, was not. I do hope she gets to continue her studies without any man getting in her way or deterring her path.
It's weird the way you guys talk about the FL and her inability to break free from her mom like she isn't a victim of decades of emotional and physical abuse. If she hasn't had many or any person in her life prior to help her realize the gravity of the situation, she certainly will not have the strength to leave it on her own immediately.