My husbands ex has another child with her ex partner after my husband who is 5 i think, my husband and her also share a child who is 8, my stepchild, and me and my husband have a 2 year old together.
I entered this relationship (6 years ago now) with the hope that we could get along well but she was very hostile at the start and though she's somewhat civil toward me now as in we'll say hello when we see each other, she can be an absolute horror to my husband when she doesn't get her own way with something. The way she speaks to him sometimes it's atrocious and because of this I do not like her as a person at all. I never get involved and I'm always polite when I see her but I think she's just a selfish person in general.
Anyway onto the AIBU... her childcare has fallen through tomorrow for her 5 year old, DH is working, I'm not. She's asking me to watch her child so she can go to work and I've said no basically because I just don't feel like doing this woman any favours. I'm having DSS because it's our normal day to have him (week on week off) and I probably would even if it wasn't because he's my stepchild but her other child I've only met a brief handful of times and I put bluntly I just don't want to do her any favours because she's an awful human being.
Aibu?