My sis going crazy?

I am kind of worry about my sister because she has been talking nonsense. Things that does not make any sense, I do hope she can visit a doctor. She is not willing to do that and she has decided to move out and live life at other place.

Sometimes I think she has bad temper, yeah she has and she likes to scold people and asking so many questions too. Her colleague has resigned and she too is planning to do so.