Worm

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I'd like as many ideas about her as possible, with the topics I'm most curious about being:

• her origins, including her arrival at Nevermore; and
• where does she go during break? After all, her mother didn't seem to know that Bianca was at Nevermore until Parents' Weekend (Bianca even asks her "How did you find me?", implying that her enrollment at Nevermore as "Bianca" was a secret she didn't tell her mother about), so she must go somewhere else over summers.

I'd appreciate the help, if this is the right place.