Schizophrenia sufferer mistakes smart fridge ad for psychotic episode

My schizophrenic sister hospitalised herself because she throught she was having a psychotic episode where someone was attempting to communciate with her through her fridge. Turns out it was an advert on the LED screen.

Need some advice. She's not really capable of organising most of her own affairs. She spent 2 days under monitoring. This isn't the first time...