Your writing is direct, which is nice to read. However, this also makes it rushed. The chapter started off on a nice pace but got quite hurried towards the end.
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Also, the opening sentence doesn't really draw the reader in. They starting couple of paragraphs is where the reader decides whether they want to read further or not; and yours just describes stuff. I suggest you could include some thoughts of the MC in italics.
chapter two
A lot of information was presented at random. For example, here, we did not know she had a headache before. Maybe you could show her massaging her forehead.
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I've also noticed a bit of grammatical errors here, a couple of misplaced commas, simple plural mistakes. I'd like to point out that even though you're descriptions are nice, sometimes they are not needed to be stressed so much.
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In real life, people usually do not be so direct with meeting people. They stall, hesitate. Also, how is Alyssa so enthusiastically ready to be her friend? Shouldn't she be wary of the students? And isn't she concerned as to what happened to her, why she's here?
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The ending takes another turn here. A lot has happened in this chapter, something I do not like a lot. It would be easier if the reader gets a little time to grasp things, maybe split this into two chapters?
Overall
With a little bit more attention to people's point of view and I think your story can be great.
