My mother's personality is changing. She gets angry at me for seemingly know reason. Sleeps a lot. Does not want to talk to anyone.

Not sure what to do. She has multiple health issues. I am her caregiver. Have recently had financial problems. Seems to be effecting my mom. Sometimes she hoards/hides food. Have difficulty getting her to contribute even when she has the money. She never thinks she has enough... Not sure what is going on. Pls advise.