Lookit! More lists!

She couldn't tell if this would be helpful or detrimental to her learning just yet, all she knew was that they were there on the board and she needed to scribble them down so she did, both list of course--

You could use spells to find all that stuff out? Then why the heck was she still listening to what people said?? Merlin knew she didn't care about half their opinions in the first place and now she knew she didn't have to take their word for it because her wand could take care of that! NEAT!

Homenum revelio.

That sounded oddly familiar...OOHHHH!!!! That was that spell! The one he'd shown her when she ran into him!! "It lets you know if there's another human around if they're concealed." But that's what everyone was saying so she probably didn't need to repeat it but did anyway. "You can use it in cases where you're being spied on, like if you're trying to get something done but you can't shake the feeling you're being watch. In that way it'd be useful but seems more useful when you're just trying to find someone. If you do use the spell after getting the feeling that you're being watched then you no longer get to use the excuse that you never knew they were there and didn't mean to blow them up."

Just a thought.