The DU Lounge

Please do not hold yourself responsible. I had to put my 90 year old father in memory care 25 years ago. Found him on the floor one Sunday afternoon when my husband and I had gone to visit and watch a football game with him. Ended up moving him to another facility recommended by his MD for skilled nursing care. He was confined to a wheelchair at that point to prevent more falls.
I don't know what the standard of practice is now once dementia patients start having falls. But I can tell you that after several months confined to a wheelchair, unable to feed himself, use the remote for the TV, or read, he decided to stop eating and I supported his decision. He went into a coma after 3 days. I sat with him and read to him on the last day, but had to go home to get dinner for my boys. Planned to pick my husband up at the airport and then return to his bedside. I got a call at 8 pm that he'd regained consciousness and come quickly. When I got there 20 minutes later, he was gone. I have heard other stories that often people who are dying will hold on until their loved ones aren't with them, to let go. We'll never know.
You did the best you could. Please don't hold yourself responsible.