Yak, you're welcome. You sound better this evening. I'm glad to hear you are feeling a little less overwhelmed.
I hope the medication does help your mum. I remember when my mother was having anxiety and it was awful for her, and horrifying to watch, she would get so distressed and nothing seemed to help. She wasn't eating, sleeping, washing, she just paced and was frightened all the time. Mercifully a change in meds (and better sleep, nutrition, and 24/7 care) helped her and we have not had a return of the anxiety at that level.
I struggled for a long time, wanting my mother to be happy, until I finally realised that the dementia, plus her personality before, meant she likely couldn't be happy in the way that I think of, as happy. She is settled and content and well cared for, and she has moments of enjoyment and pleasure. I figure that is probably the best I can hope for. The things that would make her happy, truly happy, are impossible (to return to people and places long vanished into the past).
Maybe that isn't true in your case, and you can find a way for your mother to be happy. Just, please, don't kill yourself trying!
I have also done the house sale, and it's not fun, either. Best wishes for that as well. Please hang in there!