analog

Hallucinations are something people have when awake. She's just having very vivid dreams. Lots of people have lucid dreams, it's very common. While nothing rules out schizophrenia, not much supports it, either. If she's not seeing things while fully awake, it doesn't count. Sleep deprivation can do incredible things to people (as far as hallucinations go), including very vivid dreams when they finally do sleep. This explains either that she was asleep and awoke when Jake called to her, and she was dreaming, or perhaps the lack of sleep had taken a few liberties with her conscious mind. When asleep, people are perfectly capable of talking, screaming, throwing things that are within reach, etc. I talk in my sleep all the time, and one time I punched the wall behind me... and the only reason I know i did it (because I didn't remember it) was because in the morning, there was a mark on the wall where i scraped my knuckle, and my hand hurt like a bitch.

Lucid dreaming very often incorporates the exact room, position, etc., in which a person occupies at the time the dream starts. And if this "shack" is anything like I'm thinking it is, just a little stand-alone construction outisde someone's house, it is most likely no stranger to spiders and other little things that bite people. Even if this took place in the home, I would say soemthing bit her. Hell, being bitten may have caused the odd dream.

As far as the other dream goes where she saw spirits trying to trap her and throw her out the window... shit happens. I've had a million and nine weirder and scarier dreams than that (really- I have lucid dreams all the time, and many of them are totally horrific), but I didn't have a secondary thing like the "shack" incident to try and correlate them to, to believe there's something going on other than two unrealted things that are both odd.