Are Restlessness And Hallucinations Side Effects Of Using Paint?

My 18 year old daughter is a graffiti artist ( not illegally) and is not using the sprays sensibly, ie in a well ventillated place. She is recently experiencing anxiety, restlessness, aggression, hallucinations and somtimes has short term memory loss. Is she experiencing the side effects of the paint? how long does it take to leave your body?