Oookay, so. After talking to a couple people and considering things, I've decided to rework Jii's "Sweet Stuff" weakness as I'm not comfortable with the impression it gives. Firstly, I'm entirely removing caffeine from the equation; it will naturally affect her a bit more than a normal person simply due to size. The new weakness -
Jii has a somewhat more noticeable vulnerability to processed sugar than the average pixan. It takes a little less than half as much sugar for her to experience the same effect that another pixan would experience (about one fifth as much as a normal adult human), and the time it takes to affect her is much faster, usually under two minutes. She experiences a more drastic energy crash after a sugar buzz wears off as well.
Jii has a somewhat more noticeable vulnerability to processed sugar than the average pixan. It takes a little less than half as much sugar for her to experience the same effect that another pixan would experience (about one fifth as much as a normal adult human), and the time it takes to affect her is much faster, usually under two minutes. She experiences a more drastic energy crash after a sugar buzz wears off as well.