Has my ex-best friend got physiological problems?

ok, so my ex best friend, i think she has some serious problems. we went away with school and i got paired with her in the room (grrrr) she acted all nice until the night time when she could not find her pyjamas. i was putting mine on but when i looked up cos she could not find them i saw them and pointed them out and she went "yeah right you knew they were there the whole time" and glared at me so i said " are you saying i a sabotaging you putting on your pyjamas" she went "yes" then went in a huff. then she was all upset cos she thinks her "dopey from the seven dwarfs doll" talks to her and she talks to it and it is alive and you can't swear infront of it, and when i pointed out it was not real and did not talk she got huffy but I apologized cos she was upset (btw she is 13!) then i said well i have a teddy (which i do not do any of those things i just have it) and then the next day she told me I shouldn't even be here i should be home with my precious teddy! and i was like a paid the same as you to come here so i deserve to be here like you, and she just said so. and she refuses to go in shops if she doesn't want to and tells me i am badly raise because i eat between meals. and even though she was starving and complaining she was hungry, she still would NOT eat and is convinced i fancy her ex (who is a right freak) and wont listen just goes you fancy you fancy and if anything moves in the room she blamed me even though I hadnt been in the room! so what you think?