So disappointed in my mom

My brother and I are two peas in a pod. I live 650 miles away and always make an effort to come at least once a month to see my family and spend time. Today my brother got hit on his motorbike and I was the first person he called. I freaked out because I’m concerned about how he’s doing and second because a close family friend was involved in an awful accident last week killing 2 out of the 6 while the rest are still recovering. I made sure my brother facetimed me to make sure he was okay and thankfully he was and he just got scratched up and fractured his collar bone. He had a bruise on his head too and I just got so worried because he’s my other half. I called my mom and she was getting her nails done with my little sister and said she is waiting to finish. She spoke to my brother and he said he’s okay and they’re taking him to the trauma center and not to come (but of course why would anyone not come???) I had my husband take me to the airport and I left the house with nothing. Just to be with my brother and makes sure he’s okay. He told me not to come but I didn’t care. I was worried about any head injury or how my dad would react because he’s very sensitive to these things and didn’t want him to go through it alone. I wait 4 hours to finally land and thank God my brother was released from the hospital and My dad picked me up from the airport. When my dad heard the news he left the house without even wearing a shirt on. My mom, being in the area didn’t even come to see if he was okay? All she did was call. I asked her if she would pick me up from the airport and she said because there’s so much traffic and she has my sister and her friend that she’d call me an Uber. Like, you’re THE MOTHER! I’d drop anything Im doing and go to my child regardless of what happened to them. I am so thankful every test came back okay for my brother and I’m at home taking care of him and being around for support. I called my mom out on her behavior and she said she shouldn’t have to feel bad because he said he was fine and told her not to come. I don’t care what the hell I have to go through just to be there for my family even when they tell me not to worry about it. Is it wrong to be so disappointed in her for not even leaving the salon to drive to him immediately as she was close by? Mind you, she’s getting plastic surgery next month and needs someone to take care of her every day for a month and I of course said I’d be there for her no matter what. Now I’m like… is it even worth being away from my husband while she can’t do the bare minimum as a mom for my brother? (Ps, My parents are divorced)