We already knew this girl's name in the last page. I'm going to expand her info a little bit. She can read minds, not just humans but other vampires too. Not all the vampires can do it, so Kira have certain advantages over Hayate.
Kira's last comment refers to the first page of this chapter, if you rememeber (and if you don't, just scroll back some pages ;D) Hayate was staring at two girls from the roof of the school. And Hitomi is 16 years old… OK, you got the point.
I'm planning to upload another page soon (maybe Wednesday), I hope I can mantain this pace for a while.