Vanished

I...I don't know what to think.
I'll start at the beginning I guess.
Ok, so I arrived at mum and dad's a few hours after my last post, spent at least an hour trying (unsuccesfully) to calm my hysterical mother down. Eventually she just sort of...deflated I guess, collapsed on a chair and pointed to Megan's room. Curious, I walked in and was immediately greeted by a face full of Operator symbols. It was like she had gone and taken all the the paper out of the printer (which she probably had), and then decided she wanted operator-symbol-wallpaper. There wasn't a centimetre of clear wall anywhere. And just to top it off, her desk was covered in drawings of Mr. Tall Pale and Faceless himself, his tentacles making him look more like a giant spider than a person.
Oh and her journal is full of creepy-as-shit rambles and dreams. There's some pretty messed up stuff in there.
It was like something out of Seeking Truth.
I honestly have no idea how to take this. either,
a) She ran away after spontaniously redecorating her room
b) She was abducted after spontaniously redecorating her room
c) Slenderman is real
Ok, c) is highly unlikely, but you never know. After god-knows how many hours combing the neighborhood looking for her and finding nothing, coupled with the state of her room and her weird journal entries, you have to wonder...
Guys, I need advice here. What should I do?? Did she just run away? If it is Slenderman do I continue looking for her and risk bringing him after mum, dad and I?
I'm going to go search through her room again and see if we missed anything.

Cake, PistolShrimps and Concerns.

My god. I've eaten so much cake today I can actually feel  my waistband expanding. It wasn't even a special occasion or anything, I just went "Oh screw it, one day of binge eating won't make me fat" and then proceeded to stuff my face with delicious cake.
I'll go run up a hill or something tomorrow to work it off.

Come to think of it, tonight has just been me turning into a vegetable. All I've done is watch youtube, read slenderblogs and creepy pastas, eat cake and drink tea while lounging on a sofa. I may even watch Fight Club later. While eating more cake. And tea.

Alright, time for more shameless advertising. Has anyone here ever seen the PistolShrimps channel on Youtube?
Oooooh boy XD.
Just....just go look. They are honestly some of the funniest people on YouTube.

Ok. Now that all the light things are out of the way, I do actually have a possibly-serious problem I need advice on.
It's about Megan.
I spoke to her over the phone about an hour ago, and I'm almost positive something's not right. She sounded exhausted, she was really really quiet, and she just sounded overall distracted. Yes she's in year 11 and has a fairly large workload, but it has never bothered her beyond typical teenage complaining before now.
I don't know what it is, but there's something wrong and she absolutely refuses to tell me. She just keeps going "Oh I just had a late night".
Ok, I might have believed that, but I spoke to my parents afterwards and they said she's been like this for almost a week now and they've both seen her going to bed relatively early. That doesn't mean she isn't staying awake after she's dissapeared into her room though.
I know that there's probably nobody reading this, but if there is I'd love to know your ideas on how to help her, or at least find out what's wrong.

Alrighy, that's all I have for now.
Later.