Sibling issues
I hope that you will find peace in your heart and be able to strike a balance during the time your mother still needs you! You can distance yourself from your siblings and not make yourself available,'but I think the time spent near your mother will give you some peace!
Maybe the best place for your Mom is with round the clock care somewhere,'and that if you decide to go that route,'it may provide some relief between you and your siblings! Spending time with your Mom at an assisted living center can be a lot of fun!! My wife works at "Country Manor", and I love to stop in and chat with the ladies!! They're a hoot, and they love it when I play some old Bill Monroe or Johnny Cash on the guitar!!
Whatever you decide, try to think it through completely to make sure you are making an informed decision that is best for everyone, and especially YOU!!
You got friends here too bro, just know that!! Geof