My heart goes out to you just reading about your mom's suffering and your feelings. It is natural for us to have feelings, to have thoughts, to feel lost and not to know how to pray. When someone in our family had been very sick for many years, I felt at a loss and I told a priest I did not know how to pray anymore. He answered: pray for a quick recovery or a happy death.

In your mom's case, the first one is hardly an option so this does not apply to you since you don't have this choice. Your choice now, as I see it, is to leave the date up to God. Think of Love - not time - for Love will be with you always as it will be with your mom. She will have eternal Love when she is finally called by God.

I know that this is not a consolation right now; but it will be.