[action]
[Even though it's a different brand of "magic" than what she knows of and is accustomed to having lingering on the edge of her senses, it'd be difficult for Saber to miss such power with this proximity. She glances up, nearly spot on where Homura is, while smoothing down her jacket perhaps a little self-consciously, after her little "complaint".
The young girl-- of Asian decent maybe?-- is out of place on the rooftops, and easily picked out... and neutrally stared back at just as evenly, Saber getting the hunch that the girl had been watching, at least for a time. She doesn't feel any hostile intent, but there does seem to more to her; she should know well, being a early teen in appearance only herself]