i wouldnt get too caught up in the paranoia about the girls. just say hi back. dont worry about their motives.

as for the psychosis. that was something new for me in my last bad bout a few years ago so i dont have too much experience. the walls would be moving in on me, patterns in the carpet would be moving, i learned i had to not get caught up in focusing on those things or i would be lost to them. i had to look away to something else quickly. other times i would get caught up trying to figure out if things i was experiencing were real or not and i would ask a trusted friend to verify whether they were experiencing them to so i could come back to reality if they werent real. i just was constantly cheking myself to make sure i was in reality.

i am sorry you are going through this. hope you get better soon.