I'm so sorry to hear you mother has had such a rough time, as have all of you. Bless your soul, you must be exhausted.
Families are wonderful, sometimes very frustrating during difficult times, and I totally understand how you feel about having to keep calm for her, explain to them without creating havoc about what's going on, and the whole coping mechanism stuff.
I'm thinking of you and sending hugs your way.
phoebe