If she knows the backlash will be insane and she still has to live there, totally understandable. Make sure you’re aligned on where to go with this in the future. If she truly wants to choose a life with you she may have to break with her family at some point. You can’t expect her to be ready for that at this time, but you also shouldn’t be strung along if she never sees an actual future with you. Good relationships require honesty on both sides and great communication.