Schizophrenia kinda thing. The limits.

My grandmother is around 80 years old She says she saw some people in house (some imaginary family (mainly a son and his mother)) She never listens that there is noone Also whenever she start talking about random things she didn't stop, even blame my mother by saying that she make non vegetarian food in our kitchen(because the imaginary ones says to do so) which can't be possible because in our family not a single person eat egg. She has diabetes and some little bp issues Which her meds are going on Also my grandfather died last month after that her things are getting too much If we try to make her understand she didn't listen at all even start talking to those random people{generally fight with them} (which she things there are because whenever she listen a random sound from somthing she things that's them (imaginary family)). We are frustrated because of that and also while talking she crosses the limits.