Yeah, there are hints in the environment and their little lore blurbs, but Bella is the nurse and Ligeska is the principle. However, the school uniforms really make them look like students, so can't blame anyone for thinking they were (I thought so too at first).
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Bella is the nurse? Honestly kinda fits too well the reason why she likes apples that much, but then another question is in mind. Why did the girls want to eat our main student?
I get it from Satie that she might have a crush on him, Tulpy because we probabbly make fun of her, for Legieska I think is self explanitory for having a literal cage on her office and Bella if it happens to be the nurse then... why? Because we stole the apples or perhaps she wants us to rest on the nurse room but we didn't want to?...
Or just happen that the preds are just hungry lmao
It's directly said that there are unexplained disappearances around Deep Pit University and our character finds out the truth that people are being eaten and digested, so the pred is hunting us to keep it a secret
At least that is the story given and makes sense for Ligeska and Bella, but I like the idea with Satie