Great stuff!
found a bug where if you collect all the mirror shards before necessary, you cannot interact with the mirror
Are you sure you got all 4 shards? (Rex, garbage can in the hallway, sink in the girls restroom, and paint can just in front of the rest rooms)
yep double checked, although might be an issue on my end
and i found an issue where the janitor closet doesn't open even when i have the key