(((((Hiding))))) My heart really goes out to you. My Mum had breast cancer twice. She survived and has been doing well for many years now. But I know how agonizing it is to watch a beloved parent who is ill and to fear that we will lose them. I'm so very sorry that this is happening to your Mom and that you are having to face these fears.
I really hope the surgeries go as well as possible and that your Mom will be ok. I hope you have some people supporting you too. Wishing you and your Mom all the very best