Improving sibling relationships after parent passes.

Hi all, I have been living with my mother for several years in 2 different states. She and I were a lot alike, so we got on well and learned how to have a good relationship with (i.e. letting the other know when there was a problem.) That's always been hard for me, and my mother. I paid my bills, she paid hers and we collaborated on the rest. I was unemployed some of the time so I treasure that I got to spend so much time with her. Last December she went in for a schedule heart valve surgery and pacemaker insertion. she came home and was fine for a few days, then had a cardiac arrest. I gave her chest compressions, the paramedics were able to stabilize her and she went back to the hospital where we let her go on 12/23/2025. I lost my job in February 2026 because I couldn't keep up with paperwork. (my job was very accomodating when I had to spend so much time at the hospital but it was fee for service, meaning I didn't get paid for doing it, but I was not allowed to do it at home. I know now that it was depression holding me back and prevented me from having any "get up and go" to do anything. I finally got my doctor to prescribe Adderrall which has helped immensely. So my brother (lives in UK), and my sister have told me I will have to move because I can't afford the taxes (my mother lived in a wealthy area.) I didn't say anything at that time because I was numb throughout the funeral etc. i think I could afford taxes after the estate finishes going through probate which I understand could take a year or more. but then I would have to buy my sister and brother out and I don't know the process is but not sure I want to go thru it. I also have no idea how much I'll be getting from the estate and investments. I am job searching but afraid that I am going to fail again. I thought that I would take a break from being a therapist and find a job where productivity is not such an issue. I am still paying my own bills but my sister is paying the rent which i appreciate but I feel guilty. it has to be enough to support myself, I would like to start paying rent so I have some control again but the rent is part of the estate so I may not be able to do that. My sister is the executor of the estate, has to deal with complicated legal issues in our state (we both live near the border of 2 states so we're only about 30 minutes away. ) she is a psychologist so can be controlling (no shade to any doctors out there.) If I'm in a good space I can let her know if I don't like what she's doing but i usually come up with what I want to say a day or 2 after whatever happened.I have noticed my sister being very critical towards me lately. for example: she came over yesterday to help clean out and reorganized my pantry because it wasn't to her liking. We got to go through all Mom's stationary etc which is what I wanted but because she did the pantry she over did it. my therapist pointed out that my mother who had a very sweet personality said thank you or complimented me when I did something and vice versa. And my therapist noticed that my sister doesn't do that much. I try to remember my sister is grieving too, she told me that is angry at mom for leaving. I have only a few friends, trying to find more, no significant other. I do have a 11 year old Doberman/Rottweiler who is showing signs of aging so I am afraid of what will be coming soon, althought I try not to. I believe she has lost her hearing so I worry about her a lot. I just feel lost. how do people handle this? I am 56 years old andI don't want to spend the rest of my life like this.