And I want to add to that, please don't let your tremendous pain cause you to fear her dying process. Even if her eyes are closed and she is way off she knows your there. Tell her how you feel and tell her whereever it is she is going to keep an eye on you and that you will carry her with you always. For me doing hands on care is very helpful. Ask the hospice folks if you can swab her mouth or whatever they are doing to help her be more comfortable. Keep talking with her. Good luck
I am glad you got the extra time and I am glad you have a short time to say your peace. She will always be in your heart and it hurts but try to celebrate who she is/was. Maybe tell stories to her as you sit with her. Bring out pictures for other family members to talk about and reminisse.