Honestly, all I can imagine is this fuming girl that's shorter than everyone storming through the mall on some sort of tantrum. Sorry if you find that offensive towards Lyra, but it's all I can think of here.
I think this is going well. I thought of that on the way home, and thought it was interesting to have a type of computer like storage in his mind since he runs calculations 12-15 times a day using approximately 30 million characters for EACH calculation.