Not on talking terms with my mum?

I used to be close to my mum...but since my dad ped away and with a few quarrel incidents with my mum over the buying of a new house...i became distance fm her. I find it very irritating to talk to her..she got the habit of threatening to commit suicide, leaving home...i'm so tired staying with her..i hired a part-time mate to help out with the housework but she dislikes the maid and drove her off. I do feel guilty at times and sympathise with her...but i just cant help it...apart from providing her with material needs, i'm not talking to her at all. I'm so unfilial right...but i really cant help it...i feel like moving out to stay on my own, but worry she will think i abandon her and try to commit suicide again...wat shld i do?