Well she already sexually assaulted him. Wouldn't consider that she's necessarily "helping" him considering that it's kinda manipulation into eventually engaging in sex. Basically kinda grooming
If she didn't do that he wouldn't be able interact somehow or to go out instead he could be locked in a cage
Broooo she could suggest ways without doing that. They're desparate and if she suggests it might be easier to calm his aggression if they had him in a different setting they would listen. She literally had so many choices to avoid sexual assault but she didn't take time to actually think about what she could do
She could have sex with him by fear(threatening him) but she is taking her time to help him before doing anything