i really wouldn't worry too much that how things are with her FOUR DAYS out of rehab is your new forever. she is very newly sober and has a long road ahead as she begins to recover - physically, mentally and emotionally. her recovery program and the people in it are her LIFE LINE right now....that is where she is getting her support and guidance in learning how to live life without drink.
i'm glad to hear you are attending alanon, that is FOR YOU. that is where you will get your support and guidance.
give time time. expect little for now. try to keep up with your normal routines. she has to learn to do for herself again. like learning to walk.