[ She isn't entirely sure what this feeling is in her stomach, some uneasiness about her words.. was she really supposed to be that wary? But Shiki really did want to be with her, right, otherwise he wouldn't have bothered taking her out on a date and doing all that--

.. she shakes her head, trying to get rid of the thought if not just temporarily. ]

Hey, Yozora. [ even if the other 'girl' is already walking away, Ange says something - maybe exactly because Yozora is already leaving so it won't get even more awkward. ] Next time you need me, just call me on my bracelet instead and I'll come, okay? [ ... ] Just so you won't ruin my windows any further.

[ CLEARLY THE ONLY REASON. Not like she somewhat considers you somewhat-of-a-friend, yozora, geez, don't think too much of it. ]