Would like to preface this by saying I completely understand that she's terrified about a cancer diagnosis
Mum is mid 70s, lives independently, is currently awaiting appt for diagnosis and treatment plan for lung cancer. She also has COPD.
She's a lonesome old bird, never had many friends, has always been glass half empty and so folk (including family) keep her at polite arms length. I live locally so have been called upon to attend appointments with her, also day to day bits and bobs.
Except what she tells people about the appointments is a million miles from what has been discussed. She told the oncologist she thinks the lung/cardiac function tests are wrong and lied about what she is able to do (6 hour walks when she can barely get upstairs). Oncologist has requested invasive biopsies to help make a plan (having told her everything is suggesting that it is cancer, vanishingly unlikely to be anything else, has already discussed treatment options in depth which depend on biopsy results) but she's telling people that she has no idea and is dreading being told its cancer. Told her incredibly supportive brothers that she's no idea who's taking her to appointments or looking after her for 24 hours when I immediately agreed to do it weeks before (no memory issues and admits that she's done this despite me agreeing to help).
Has admitted that she doesn't expect that my brother will be able to help much (Big Important Job, wife and kids) yet I'm not being supportive enough (similarly important job, single parent, own health issues). Will not accept any outside support and is expecting me to do everything.
I can't do it. I just can't. I've got so much of my own going on - work/kids/my own health/financial worries/exh being an asshole/my own MH, and I'm done with her minimising to everyone else so they've got no idea how much help she's going to need.
We had joint counselling 8 years ago after a previous cancer experience when I was busting a gut (but still got criticised for not helping enough), and she admitted at the time how unfair it was and that she could see how her behaviour made me feel. Yet here we are again. My relationship with my brother is in tatters as I'm becoming so resentful. My uncles think I'm a shit daughter (despite them confirming she'd given them false information). Yet I'm not allowed to say anything because it might be cancer which she's already been told it is I know she's terrified it's cancer. But I'm scared that my mum has cancer too.
Please tell my how to do some self-preservation/boundary establishing?