my parents divorced recently. they said they "grew apart." recently, i realized that the real reason was because my mom cheated.
two days ago, my mom had a storyline to her whereabouts that did not make sense. she left us home alone for the night (which i am 99% confident that she stayed at her boyfriend's house). so, my brother and i confronted her – we only asked where she was, that's it.
she got super defensive, called us "dumb" and "idiots," with no concrete evidence other than the fact that we were "wrong" and didn't trust her.
she then got mad at my brother (11y old) for being afraid that she was missing. she got mad at me, saying that i don't trust her, and that if the roles were reversed, she would never question my whereabouts.
yesterday, she yelled at me, saying she's financially cutting me off, getting mad at me for paying for gas and making me pay her back.
i decided to just apologize. she accepted it, and said she wanted to have a "deep conversation" with me. i thought she would fess up, at least about this relationship she's in, but instead, the deep conversation was how i needed to be better. at the same time, my brother came into my room and she told my brother that he needs to be smarter like me, which i feel like is super hurtful to receive that comment. she made fun of my brother and how he probably has a small d. HE IS 11.
she also complained about my dad and how we should feel bad for her. my dad has always supported my brother and i, unlike my mom, and honestly – i don't feel like it's her place to complain about my dad to her children.
nonetheless, my mom does seem more happy than previously. so maybe i should just let it go. but this really does affect me, and more importantly, my brother. i've been looking up to her for as long as i remember, and now i feel like i should cut her off