shocking/weird situation with my mom

I have always struggled with relationship with my parents and my mom especially with the neglect aspect as everytime I broke down crying she would just detach and disappear to some other world like she would be sitting and just watching me as spectator while I cry and break down so I have always felt a little disconnected to her because ik I can’t cry in front of her cause she would never understand me as she’s not even the same world as me and today something weird happened we had a heated discussion I broke down completely and she came to hug me???? like it’s really out of character

and then she was like apologzing for unintentionally not being there for me when I needed her the most and how I grew up on my own and she said “I’m so sorry I wasn’t there but from right now I want be there” and I couldn’t stop crying even while typing this I’m crying because every time she detached from reality while I cried I slowly stopped seeing as my mom I started seeing her as a spectator who will not talk but just detach and not even ask why am I crying but today her behaviour was so different that for the FIRST TIME I thought “she’s my mom I can never get detached from her like she does” but she’s getting better ig and I don’t blame her for detachment cause I understand but I still feel so weird cause I’m not used to her caring so much abt me