Is My mother in law narcissistic?

She is divorced, has 2 sons one of which I have a son by and the other is a Schizophrenic. She spends her money unwisely, and is at the point of losing her house. I believe that if she didnt spend her money on things and places she really does not need to and was more responsible she would not be in this mess... My bf and I and our son live with her..her other son is in a home for Schizophrenics. We were supposed to live there rent free as of Jan 4th and then she said we had to give her 700.00, then she always voulenteers us into events we have no clue we are going to..we are supposed to live there and save money and when SHE involves us in HER AGENDAS we spend money we dont have!!! She hates her ex husband and claims that she was the one that was there for her sons and that their Dad says one line and he is God.. I think there is a reason he left her.. she is selfish and controlling and a subtle abusive kind of woman.She gets on her sons nerves and does not change....