¿Are we wrong to feel like this? Read description please

So my parents separated ways a long time ago,12-13 yrs. My mom says my dad was at fault, that he started cheating on her when he moved to another country, to which we were supposed to be heading soon once he settled. That never happened because he always wanted to bring just me and my brother and my mother never allowed that. So time passes, something happens in our family and we have to leave our country to live with our dad. My mom stays. At this time my father already has a expecting wife, and another daughter. She never cared about our necessities as adolescents. I was 11 my brother 9. When I got my period for the first time it was the only time she gave me pads. After that I had to ask her to give me some of hers sometimes she would tell me to look for them and sometimes she said she was out. So I would go to school using toilet paper as pads because I was too shy to ask my dad. Idk if he thought she was buying what we needed or if he just didn’t care. We always felt left out. They had three children which they had me take care of while they’ll go to do errands. I was demanded to do things at the house, not just chores. I would get in trouble if dishes were dirty, if the bathroom was dirty I’ll get in trouble. When I was only a child. Now they are expecting another child. Now I am married so I’m not there anymore. But I’ve come to find a few things out. Like he made my mom get an abortion once. And some other things I’ll rather not say. Anyways even though Ive made my life I can’t help to feel ghosted by those memories sometimes. I’ve never brought this to his attention. My brother has stronger feelings about this and is really affected about the whole situation, which I know is not good. The thing is are we in the wrong for feeling like this? Are we the ones making a huge deal out of it? Or is what happened reasonable for these feelings?

Any advice? Would really be appreciated.

Thank you for reading this far.

Vote below to see results!