[quote=Freeshooter92]
She's not likely to hurt Lyris, given that Alaira does not like unfair or one sided fights. And Lyris doesn't seem like the kind of person that could possibly anger her enough for her to consider violence.
[/quote]

Yes but you need to remember a few things:

1. Alaira's been there at the College before Lyris so it's likely already fixed in the room before Lyris came around. 
2. Khan doesn't always knows who's bunking with who as he can't control everything about the college. 
3. Khan rather be safe then sorry.