As much as you want her to respect you, please also look at the situation from her point of view? She is getting a futon in the living room while you have a private bedroom. Where will she be able to store all her stuff? Will she have any responsibility for your animal? Is a fifty/fifty split of expenses the best way to share? Just look at the situation as if it were you moving in with her to help set up the ground rules for the both of you. Get her input into how to make this a workable situation.