Honestly, not sure how I'll feel on this one. She literally disowned me in December of 1999 after my grandfather passed. She's actually my step grandmother. Told me she never wanted to see me again on Christmas Day and honestly, not seen her since
Sorry to hear that. But I can tell you from recent personal experience, someone dying doesn't change what was happening before. If she made those decisions and never reached out to change them, they stand as they were.
Your only obligation is to do what you feel is right...and nothing more.