I have greedy siblings. One a tax accountant. I worry though I am 24/7 parental caregiver, siblings will claim wrongdoing. Monthly stipend is not much. Can they claim it as part of my inheritance upon death of parents? Can tax accountant sibling claim I need to file taxes on that amount? They wish me harm though I've put my life on hold for my parents for last 3 years, no help from siblings.