(((FD)))
Prayers going out to you and your mother. I'm sorry you have this worry.
(I'm glad your brother is near her and SIL is a doctor,too.)
My mom has been gone 21 years and I still miss her;but I still can "hear" her advice and encouragement. Part of me is "glad" that she and MIL did not have to witness the mess our family has become. (Neither were A's,but many of the others still here,are.)
Hoping you keep us posted about how you are both doing.