Ahhh Monteith. I knew two girls in there. The rooms are tinnyyy, so don't bring a ton of random stuff and she'll have to loft. They arn't allowed on the cadet floors, and the cadets arn't allowed on the upper floors unless for social reasons, but they're restricted to their hall, library, academic-places, or cadet events after 7pm, so. Little hall interaction. However, the kids in Montieth all bond really quickly because they're not a big fan of their dorm. Montieth has its perks (it's really not far from everything...I think Lee/AJ are further from classes than Montieth is, especially if you're in engineering), such as being close to Shultz dining hall (yay breakfast!), being close to Torgenson Hall/Newman Library, bus stops are close, the cadets are studios and can be great study buddies, and your closer to downtown. However, the sucky parts about Montieth are two main things a) there's a power plant right next to the upper quad, and if you're on the right side of the building, coal dust will blow in on windy days..not a ton, but its noticeable b) the cadets get up really early on PT days and are loud in the quad, so again, if you're on the right side, it's loud.
The best part about being on the upper quad is that you make friends real fast. She'll enjoy Montieth though