Frustrating thoughts impeding organization


I share a home with my mom (she owns the home currently). She has said for several years that I can buy the house from her because she would like to move out of state. In an ongoing process to make the home feel more comfortable/homey to me, I have been trying to clean out/organize spaces. I start with one space and go through everything. I ask her to also go through her stuff. She does not like to get rid of stuff. If she does, she will often put things into a box and store it elsewhere (a bit of a pack rat). She often says she doesn’t want to get rid of things because she paid for it or she still wants it (even if she never uses it, it’s outdated, etc…). When I’m in the process of organizing and she says she doesn’t want to get rid of anything, I find myself getting very frustrated/upset physically. Part of it stems from her saying she will be moving, and she has yet to make any progress towards that. It also stems from me trying to make my space “my home” and I am unable to create that when she continues to do this. I go back and forth between maybe I should move out OR really try to work on my thoughts and why this bothers me so much. I’d prefer to do the thought work so I can work through this instead of just leave and avoid it. I understand she has her reasons for not leaving/holding onto stuff, but I’m having a hard time moving forward with my thoughts regarding the situation…