Advice for developing resentment towards sibling that won't help?

Eschwartz

My mom waited two years to tell me about a sore on her breast. My brother knew the whole time. Once I found out, I took her to the ER and she was diagnosed with cancer that spread everywhere. She had multiple surgeries and it was determined she had breast cancer with at least the estrogen and Her2 receptors where she can receive the best treatments. She received chemo for the first time today. She is currently in a rehab center but will be released soon

My brother lives 10 hours away from my mom where I only live 3 which makes me the primary care-giver. My brother does not help at all. He claims to not be able to help due to "his life" yet doesn't have children like I do and flies all over the country for events with his friends.

When he does decide to be involved, he and his wife take control and do not respect mine and my husbands insight.

I am exhausted, overwhelmed, and miss my family back home. I haven't seen my daughter already in 3 weeks due to caretaking reasons and it will be longer. How do I prevent resentment, besides, therapy, from forming? I went through resentment towards my brother when my dad died and we figured things out. I really don't want to repeat history.