I hope since you wrote this you have been able to find a solution.

First you need to get her to a GP then get her to a psychiatrist … To sort then mental issues out all else flows from there

Your children only have you to look after them, so they have to come first. Your mother has other people who can help her, so don’t let guilt or pressure from others make you feel like you should do more than you’re capable of. I’m saying that you should cut your mother off, you can still help out occasionally, but not if it’s going to harm your own family dynamics.

thats so hard make sure your kids are safe not that she would do anything and try to seek more help for her.

so very hard, you have a responsibility to your children first. If you can, help out with your mother in whatever way you can, perhaps when your kids are at school. Maybe socially, have a cuppa and a chat, take her out for a few hours, do some errands, help with paying bills, picking up medicines, taking her to the doctor. Bring the kids to see her. You will know what assistance she needs, and where you may be able to help out given your circumstances.

Family always come first. Think of your children and how this will affect them. You might be able to help occasionally?

Its time to put your family first, as hard and as mean as it sounds, if by being her carer its going to upset your family dynamics with your kids then you have to put them first ! good luck!