Hi Ky, unfortunately this is not uncommon during cancer treatment. A lot of people have trouble processing the trauma of cancer constructively, and there is also the disease process itself and some drugs that can also make people aggressive and difficult to be around. You could discuss this with your Mum's doctor (or your own) to see if there is anything they can do to help. There may also be counselling services for you or your Mum (or both!) available through the hospital, and practical help through the social work department as well. All in all you are definitely not alone.
Having said all that, you don't have to stay where you and your kids are abused. There are plenty of resources available to your Mum if you are not able to continue looking after her. Personally (and this is just my opinion) I do think you need to put your kids welfare first- unless they are older they need looking after more than anyone in this situation. Good luck with whatever you decide- know that there are resources available to you.
