agreed with buttons about taking your mum out, or if you cant afford it just do something nice, like cook her a meal, parents have been parents for years, they get worn down with cleaning (before you could help at all there was about 5 years of them doing everything you know, it all adds up to one tired crabby parent)

when I was a kid if my mum was shouty i would write her little letters 'dear mum, im sorry i am useless, i hope you know i still love you even though i am very messy'

lmao, things like that.

not suggesting you do that, that was when i was like 7, but the point is, remind her you love her, and maybe she will calm down.