Should I feel guilty for setting boundaries

I have a very dysfunctional relationship with my mother, she has been broke mostly all her life and seems to always have a reason why (blaming some external force) I abruptly moved out at age 18 and moved in with my boyfriend who I have been with for 4 years now. It was hard at first and we both had to find jobs and become financially independent but we did with no ones help. My mom took this hard at first but over time our relationship got stronger and she became very close to us. I have been financially helping her for 4 years since I moved out and she hasn’t seemed to do much. Granted there are a lot of un lucky happenings in her life that causes her to be financially unstable but she also hasn’t put any prominent action to getting her own place or saving the money she does have. She has been staying on her friends couch for 2 years and is very oblivious to other peoples boundaries (hence staying for two years) his month she was finally asked to leave by the end of this month. I have been dreading it because I know her nature and I know she has no consideration for other peoples feelings if she’s the one in need. I live in a fairly small 2 bedroom apartment with my boyfriend and two other roommates who are married. We do okay as we respect each others space and enjoy each others company. We only have one tv and air conditioner in the living room so most of the time we hangout out there on our two small couches. My mom started making comments about sleeping on my couch and never directly asked me or my boyfriend. It wasn’t until I was talking about how we all stayed up late watching movies one night and she commented “your roommates are going to hate me, I will tell them to be quiet” after saying that it really pushed me to the edge especially because my roomates fairly pay for their half of the apartment and for me to have my mom come into their personal space and start dictating how they live would be totally in called for and the house would be full of tension. She also told me to tell my property manager to give her a parking space because she will be staying for atleast 3 weeks. I finally texted her and confronted her (I know I know but she is very drastic and defensive and I didn’t want a confrontation) this is what I said: should I feel bad for setting boundaries?