My deepest condolences for the loss of your mother... Very sorry... Sorry for her pain and suffering.. she is certainly well now.
My mother passed away at 77, also she smoked a lot since my father died only at 32..... her heart was broken by UBS issues and heart surgery did not work.. we did not say goodbye... 30 months as yesterday...
I am car accident survivor, C6 and C7 broken etc, returned from a coma after 20 days and get healed overnight, the progressing of pain and injury just stopped, without any medications - a real miracle with a medical certificate, as doctors said.
A friend of mine in Italy, breath cancer stage 4, went in Medjugorje (she is ardent Catholic), survived, 22 years already, so we can say it is over.
Here some video
What I learned is that real spiritual advisers would never ask big money, choosing live on donations etc. Well, the world is corrupted and no better within so-called New Age and Spiritual leaders. The good news is that we have it inside, it is free but dormant if we did not awake. And to go in a nice community for a weekend or a week or just a day, and it is so inspiring. Then you can never more meet those people. Just one retreat.....
Nothing wrong with medical diagnoses but it is always interesting for me to go to the roots and see what is the spiritual meaning of any disease, of feeling not good. Louise Hay in her books did an excellent report. All that we feel at the level of our body is initiated in our non-physical camp. We can change it by controlling our thoughts, meditation, prayers, whenever work for you. A bottle of wine will do for me sometimes too, instead of yoga.
In any way, whenever is work for you and make you feel better is right for you. All the best!