Mother keeps asking to go home from Memory Care. What do I do?

I have been caring for my mother who lives 4 blocks from me for 10 years, six of those including caring for her wheel-chair bound boyfriend. When it became obvious mother was not caring for him I called his son to come get boyfriend. Continued taking mother everywhere, for dr appoints, groceries, anyplace she went, taking care of her finances. She was diagnosed with vascular dementia. She began walking to my house down a busy road, going over to neighbors houses, just opening the doors without knocking, climbing on ladders to get leaves off roof. She made appointment to have roof replaced 1 year after it had just been replaced. And on and on. Her neighbors finally got tired of taking her back home and otherwise keeping up with her so they contacted me and told me I was negligent toward mother. I went over once or twice a day for an hour or two (however long I could stand her criticism and complaints) but it wasn't enough. She constantly lied and bad mouthed me to everyone she spoke to. Still does. With a neighbor's help, I put her into memory care. She hates it and wants to come home. She begs and cries--it is heartbreaking. But I'm so exhausted emotionally and mentally. I've neglected my own life, lost most of my friends, no longer engage in my hobbies or friend activities. Everyone who is familiar with the situation has told me I should have put her into care years ago. But I had promised mother I would not. But with the threat of mother's safety, neighbors implied threat regarding my neglecting mother, I went with a neighbor and got mother a place in care. The facility tells me mother is generally fine when I haven't visited in a few days and ask me to wait to visit. She becomes very agitated when I visit trying to get me to get her out. I feel guilty, bad, and wrong. Ironically, I was always the "bad kid". NOthing I did was ever good enough. My sister, who has done absolutely nothing to help mother during this time she so desperately needed it was the golden child. I don't understand myself why I've devoted the last 10 years to mother. I guess I'm still trying to get her love and approval that I've never had. But I'm tired and I'm sixty-five and I want to have a life of my own for a while. I'm going to have to sell mother's house and while going through her things I'm reminded of sixty-five years worth of criticism, cruelty, never being good enough. I just want to get away, but feel so obligated. I want to have my own life. I've got to stop crying. I want to disappear. Escape.