maybe you can puts somet boundaries on how long she can stay. Also what might help is having friends over when she visit. For me it takes the stress off of it. Maybe going out to dinner introducing your friends to her. Maybe you can arrange some outings that make things less stressful like going to the movies. Also.. you still can let her know that you have plans while she visits. You can go to the library for a few hours alone or plan something to go see a friend. Hope things go well!