Probably the former. Too young for the latter, and anyway I don't see hormones being enough to account for this insanity (plus I'm sick of women's behaviour being written off on account of their reproductive systems... in some parts of the world the concept of PMS is completely foreign and strange. Jus' saying.) To be honest, we do wonder if there's something wrong with her. She's pretty fucking nuts sometimes. Which makes it admittedly less funny, but...