Venting sesh 🤬

I just need to vent for a second. My mom, 3 of my brothers, one of their girlfriends, my 8 month old and myself went to an amusement park yesterday and since I have a mini van we took my car. I specifically said no food in the car because I literally just got it 2 weeks ago. My youngest brother is almost 6 and refused to sit in a seat and would sit on the floor and come up to the front of the van. The whole entire 2 hour drive he’s constantly cussing, screaming, whining, telling us how he hates everyone and so on. Oh! He also broke one of the storage overhead things that come down. The whole time at the amusement park he kept running away and again, talking bad to us, crying, screaming and my mom rewarded him with a toy from one of the shops. And let him steal a necklace from the gift shop. When I told him he dosnt deserve it she went crazy on me. A little back story before you tell me it’s not my place to tell her that: I basically raised him up until 2 years old when I moved out, I bought him things, I took him places, now hes in kindergarten I make treat bags, go to school functions, take him to basketball and much more that I don’t have to explain. My mom relies on other people do do the work. She told me that I don’t have to do anything for him again but if I say no I can’t do it she gets a huge attitude and talks crap to me because I don’t want to be involved. I have a baby of my own to take care of. Anyways, she told me she’d rather die then have me spend time with my brother again, that she won’t ask me for anything again. That it’s not my place to parent him. She also tells him that he’s stupid and cusses at him also that she would get a check off him because he acts stupid. There is a lot more to it but when we got home it was after 1am and I went to go run errands today and found my car like this. Sorry if this is all over the place it’s hard to get all the details in and I can’t explain how I feel through typing that much. A part of me feels like I’m overreacting but I’m so mad. And yes, that is someone’s toe nail clippings in the last picture l. Definitely not mine or my daughters.