Nmom visiting my city after 3 years and I need validation

The last time I saw my nmom was 3 years ago, I posted here that I had to tell her to leave my house as she was affecting me and I told her I didn't wanted to see her ever again (this was the first time in my life I asked her to leave my house immediately).

During these years, I have been NC, but this year, she had been through a difficult situation, so I supported her (video calls, as we lived in different cities). I continued with LC because she hasn't changed (obviously).

Well, she planned a trip to my city, only told my siblings (they live here as well). I found out months after she was coming. She has been texting sometimes looking for her narc supply. She constantly wants to talk about herself, and I'm only there to listen. Otherwise, she gets mad. She doesn't care about my problems, don't ask about me, our chat is her emotional dumping place 24/7 where she wants attention and validation, I don't exist as a daughter.

I went from LC to NC in a week. I have been thinking about all the things she has done to me over the years (I'm scapegoat), and I don't want to see her, I think there's nothing there for me.

The issue is that I feel guilty for not wanting to see her, I feel sad bc some people love their moms and would be so happy to spend time with them. I just need validation knowing that it is ok not wanting to see someone who doesn't treat you right and has mistreating you.

Last time before going NC, I told her by text: "I don't want to argue I'm trying to have a good relationship with you", she replied: "I don't want anything. Do whatever your heart tells you".

She abandoned me when i was a teen for 2 years, she kicked me out twice after my 20s.

She doesn't even care that I'm NC now bc she is with her GC and flying monkey.

I still feel bad. I'm not going to visit her, but there is nothing there.