Hee hehe... is that what you thought happened? Sorry. Truth is, Sora saw her text and then texted his ex-girlfriend "Get to this room... now." --Something like that, at least. There's no time for him to go and find her. Otherwise there'd be no scuffle between them. No delay before other teachers came to find them.

He really was a bit of an impulsive idiot. Just flew in there and let himself attack a teacher. Luckily for him, it worked out.