Does my mom take her anger out on me?

Anonymous
My mom is going through a divorce with my dad. It’s hard for all of us. I’m 20 and they’ve been married 22 years and I think I take it the hardest. I’m the oldest out of three of us. I have a younger brother who is 13 turning 14 in a couple of months and I feel like she babies him. My sister was involved in a terrible car accident a couple of weeks ago and it traumatized all of us because she almost died and the car flipped over. She’s in college so my mom and dad had to go up there to the hospital and care for her while I had to pick my brother up from school and get him dinner take him to school, while also balancing my 2 internships, college, and another job. I didn’t mind because it’s my brother and when my parents came back they said they really appreciated it. My mom and I argue all the time. They had to go to my sisters doctors appointment yesterday at her college for the wreck and my dad asked if I could pick my brother up. I told him I had an internship meeting that same time so I couldn’t. Luckily I got off earlier so I called my dad and told him I could pick him up who told me my brother got off at 6:15. I’d been running errands all day and it was extremely hot and raining outside. Sat in the car for an hour waiting for my brother to come outside and the first 30 minutes he told me it would be 10 more minutes then proceeded to take an hour. My dad kept calling me and thanking me. When an hour hit my mom called and told me she was on her way and I told her I’d been waiting an hour and it was getting late. She told me she was on her way so I asked if I could leave. And she started cursing and said whatever if I wanted to leave him out in the cold then I could and hung up. First of all he was inside the school for practice and wasn’t out in the cold and any time she’s came to pick me up from work she’s left after 5 minutes if I wasn’t outside. I think it’s unfair and she’s ungrateful. She isn’t this mean to my siblings. Who’s wrong?
Does my mom take her anger out on me?
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