Yeah Bhetti is right, she just wants you to talk to her since she's in the same house and all
did you ever wonder why she finds it hard to live with you?
It's going to be a bit of a shock but we're hard to live with, damn hard. I know it's not easy but you need to make at least some concessions. You can bet your mum has put herself out many many times in her life to accomidate you. Forget about the way she's letting you know as she literally can't help it, just like you can't help doing what she doesn't like. Never mention their passive aggressive tendancies to them by the way as they inevitably take it as an insult.
So my advice is to deliberately set aside time to talk to your mother or more accurately let her talk to you cos that's the way it always gos
Just shut down the computer, face in her direction and ask her how she's doing. It's really really hard to make yourself do but once it's done you only need to nod and go 'uh-huh' 'oh right' 'really?' 'yeah, you're right' 'I know' and a few other stock phrases like that. Don't venture your opinion unless asked. Be aware that she'll probably say something sarcastic/passive aggressive when you try yo get her talking but just let it wash over you, ignore it and carry on. She'll do the rest and she'll be really happy that you made the effort and that'll make you feel better too which in the long run is what it's all about
LOL! In a heated argument I say those thing :ya you're right" Ok etc. LOL!