Wat can I do guys this has bothered me for like 7yrs?

K I'm 13 I'm a girl i have a mom .in 2002 she got disabled with m.s it was very tough but as years went by she got very lasy and she changed her and my big brother would get into it becuz she at times didn't want to dress good at a special occasion and waz loud at places and she didn't want to clean her room at times.But with me Is seems like I just felt lonely becuz it was like I had a mom that never cared.There were times I needed my hair comed or washed when I was little she would always say do it urself.Or like today I wanted her to ask a question about my hair becuz she's the parent and Im only 13 I really don't know bout my hair and she was like do it you self get out my room I don't care!!!Wat do I do? She just got surgery and I'm helpin her but wat do I do? It's like since she got disabled she just changed.Sometimes I just wanna snap!!! Btw my brother said if I feel like I'm gonna snap then he want me to calm him.But wat should I do ??