Haven't caught up on the whole thread yet, so apologies if this has been mentioned, but she looks like she has a matte case for the macbook - I have a similar one that just pops on the top of it, I've seen a lot of people buy them to protect their macbooks. And the only way it can have finger prints like that is through it being wet cos it has a matte finish, so i'm guessing those are very greasy or sweaty finger marks