Hi Bibi,
Sorry that you are feeling so stressed out over caring for your Mom. While my parents haven't experienced any dibilitating illness, they have had their issues. My folks are still doing okay on their own, but me being the oldest and the only daughter, I am the only one that gets asked to do anything. My 2 brothers are off limits when it comes to my parents asking for anything...a ride to the airport, picking up their mail when they are out of town, fixing their computer, etc, etc. My Mom had a stroke 6 years ago and while she was in the hospital (about 3 weeks) I was the only one visiting every day, fixing Dad his meals, doing his laundry, etc. I am also expected to call them everyday. My brothers only call once a week. It is exhausting sometimes.
To deal with that especially with your mom being sick can be very hard. It is important that you take time for yourself, and try to draw some boundaries. Easier said than done...but it is important to try.
Take care.
Emma