You have definitely got her doubting her choice right now. Doing things for her in terms of her moving out, though it hurts, is exactly what you need to do for her. Show her that you are like a best friend and that you have unconditional love for her. Getting the couch and THEN coming over was BRILLIANT! Great job here! Her wanting beer and then wanting to drink them with you sounds like a telltale sign to me as well that she is softening.
Keep doing exactly what you're doing and I have no doubt that you will bust this D! It may take more time than you hope, think, etc, but I believe it will happen!
