When to call?

[Puzzledtraveller]

In my post "Introduction" I explain that just recently I found out my mom has stomach cancer. She has yet to see her oncologist but it has been confirmed. We are still waiting for the results of other tests. She has mentioned passing on any surgery they want to do because she would very likely have a greatly diminished quality of life and because she already lost so much weight she may not survive an operation and if she did the recovery we be exceptionally hard on her.
I think she feels if her days are numbered than she would rather take what steps she can to delay and limit the cancer and to live as freely and pain free as she can. Beside weight loss she has said she doesn't have any pain. So being several states away from my mom Facebook has been a great way for us to correspond and her to see my family grow but obviously we plan to visit her and stay with her as long as we can. There are many unknowns at the moment. But I am sitting here thinking "shouldn't I be calling her everyday?" is that too much, would it make it seem like she was already dying, I just don't know how to behave. We spoke two days ago when in a conference call my sister, and brother and mom talked about the news.
I have let it sink in for two days and think I will call her this evening. I do not want to focus on the cancer, or make it seem like "this may be the last time I speak to you!" , I know she has some time left if left untreated. I do not want to speculate on how long, but I feel like it is long enough for my family to plan the trip and go down to Texas. I am thinking November as I am waiting to hear back on 5 interviews I had. But how often should I call her? We didn't talk all that often before then. They have the oncology appointment Wednesday, perhaps knowing more will help. I still don't know. As you can see I am very confused. I need a little help, advice.