Raggie, I'm a little late to join the bandwagon but I want to express my sympathies as well. You express yourself in a unique but very eloquent manner. Both my parent's are still alive but I know the time is coming probably sooner rather then later when at least one of them won't be around. Having never been married, my parent's and siblings are the closest things to me so I have no idea how I'll handle it when the time comes but I know it won't be good.
If you get along with your sister, and she is willing, maybe you might consider spending a prolonged amount of time there while you sort things out in your mind? From your previous posts, it doesn't seem like you ree too happy at your current residence so maybe you could stay with your sister and contemplate other living arrangements?
Anyhow as you and others have said, surely your mother must be in a better place now. If you're only in your 20s then she must have been pretty young.