If he was looking for his girlfriend - he probably wasn’t a student - because he didn’t KNOW where to find her - wonder if he ever did find her...
A fruitloop might think she was his "girlfriend" even if she wasn't.
The dorm is apparently coed, as a male resident was interviewed. Did a reliable report state that the victim was female?
The shootings are so specifically targeted — one dorm room, one (or two?) classroom(s)— it would seem a personal vendetta of some sort. If so, it shouldn’t be too difficult for investigators to sort out.
The possibility of more than one shooter is very scary. Apparently it hasn’t been 100% ruled out.