as i lost dad 3 last year,i am living with mum,and she is very pushy everything i do is wrong i watch tv she days turn that off go out come back your late i am on the laptop she said get that off she has incontience and diabetes and i get snappy back at her
If that comes back negative, then you need to work on protecting yourself, since your mom is short with others too and it's just not you. Protect yourself by having plenty of alone time, away from her. Get out with friends and do what you like to do, so that you can recharge your batteries in order to have the strength to deal with her.
She can probably be helped with an antidepressant or with grief counseling. Encourage her to see her doctor.
Also, your Mum needs to be around people of her own generation as it is a lot easier to talk to someone your own age than someone a lot younger. Sounds like snipping at you is her way of getting a conversation started. Younger people are so buried in their social media, even I don't understand it.
Are there any senior centers that are near by, or would she not want to do that?
I am sorry for all the questions and no answers, but knowing the situation a little better will help us provide more meaningful feedback.
You situation -- living with a parent who is demanding and not respectful -- is unfortunately fairly common so I think you'll get lots of responses. Please give us a little more information.