Hi, first I'm really sorry to read about your mother...
I've lost my mum and, some years ago, my wife. I had kids to look after and that just made me determined to get through it with minimal effect on them. I wasn't camming then, but I kept myself super busy with work and looking after the kids and house. I didn't stop... It doesn't make you forget, but it does distract you and, as time goes by, you get more used to it.
So, I found it was a mindset thing - if you decide you can do it, you will. Think also that the last thing your mother would want is for you to be held back, and she'd want you to succeed and be happy. And camming is a way of you paying your bills and being safe in your home.
I don't know if I've helped at all; we're all different but it helped me. I know it's really tough for you and you have my sympathy and support