I "ditto" everyone that has responded here. I did try to be "superwoman" and found myself with high anxiety, high blood pressure, and numerous other things to deal with because I didn't ask for help.
My thought was that it's very obvious I need some sort of help, and I don't want to ask. Well, sometimes, siblings don't realize the stress YOU are under and all that YOU are doing because they are not there when all of this began.
I'm now getting the help I need only because I really poured my heart out to one brother who relayed to the next. There is still a lot of work involved when it comes to my mom, who is in a NH now, but at least I'm not going it alone.
Best of luck, and when someone asks what they can do to help...tell them!
As far as guilt...I just got rid of it this week. My mom wondered where her mother was and asked if she was gone. I told her she was up in Heaven. She died about 30 years ago. My mom is living in the past...I'm still in the present and dealing with selling the home Dad built. The house is empty and needs a loving family..not my little glimmer of hope that Mom will get better and come home. It isn't going to happen. Guilt is something I rid myself of yesterday. It was good for me to see how far gone Mom really is. As sad as it is with her condition, at least I know that selling her house isn't even crossing her mind...at all.