Boarding School (spoilers all) The new story Christmas Eve was incredible, but this part really got my attention:

"She's a tiny girl, the lowest percentile for height and weight in her class, and she’d **come back** from her first semester of school with a GPA higher than 4.0."

Maggie "came back" from her first semester at school....sounds like she's already attending the magical boarding school from the Big Foot short story. Bet the aftermath of PT is why Harry sent her  there. 

Hope JB and his sister start the Maggie/Mouse YA series after PT is released.