Hey all, this is Caitlin (SHUT UP) with Lenore Gamp, future wife of Xenophilius Lovegood and future mother of Luna Lovegood, current cousin of Alice Burke, etc etc.
Lenny is the last of the seventh year Ravenclaws, and is a bona fide genius with an eidetic memory. She just wants to know things! She likes to talk to people so she can find out what they know, but she has trouble connecting emotionally (...lots and lots of trouble) and she can come across as a bit of a robot because of how deeply withdrawn she keeps her own emotions. Because stress is bad, you guys, stress leads to asthma attacks. Lenny doesn't do that stress thing.
Another weird little dude? WHY YES, I don't know why you expected anything else.