My mother was diagnosed with stage two cancer this year February. She has always been a difficult and abusive person and has for most of my life a source of great pain and trauma, she is between cancer care following intensive treatment, from the start of her treatment until now I have given her the most amount of support and fulfilled her every wish, including selling the family home to downsize, my father has dementia and is unable to help me, he understands my mum's unreasonable and terrifying behaviour, recently she started expecting me to pay for everything, her removal costs, shopping and things she wanted for her new home. She is never happy nothing I do is enough. She constantly criticises everything I do and has recently started to say she felt rushed in moving even though I followed all her instructions. When I challenged her, she told me to go and get a DNA test, but didn't explain what she meant. I have been in a state of freeze since then, as this is a serious anxiety I have avoided for a long time. I feel desperate for boundaries she is taking my time and has no care about my own family life, work and commitments, I feel awful as she has been very unwell but I don't think I can take it anymore and that cancer is no reason for her increasingly unacceptable behaviour. I worry about dad and my time with him.... I'm afraid as she gets older and possibly unwell again she will be horrible to me. I'm an adult in my mid fifties and feel like I have regressed into the unhappy frightened child again.