How are you doing, kindergirl?

This is a very sad and stressful, exhausting time for you. You had sudden news of her failing health, then the trip and seeing your mom. Now the waiting. All of this is very emotionally draining, horribly exhausting. There is nothing for you to do but to take good care of you at this time. And know that you are doing everything you can do. Talking to your mom on the phone when she is in distress is a very very generous gift you are giving to her. You are comforting her by being there for her.

At the same time, you need support and you need comfort too. If you have people around you who can provide that, let them know you need it. If you don't, then do some things that are supportive and comforting for you. Declare an hour a day to be just for you to relax, read, drink soothing and comforting tea, the phone turned off... or whatever picture comes to mind that feels supportive and comforting to you.