On one hand, Eriza clearly had some knowledge that whoever that was was coming. On the other hand, whoever it was sliced open the door to get in, which is not something anyone in the administration is likely to do. On the other other hand, it is by no means beyond this author to fake us out with what seems like drama, only to have it turn out to be something innocent. Or it could be something genuinely bad... this author is tricky that way.
Regardless though, the fact that it looks bad is likely to set Lorem off: she tends to have a zero tolerence policy for anything that threatens people she cares about.