[Tamamo is probably used to her texting by now, so:]

Who knows? Everyone else might've missed something. We should go see what's inside, just peek around, to make sure we can catch the murderer. Isn't that right? [She looks up at the apartment buildings.] Dia was a good cook, after all, and a well-mannered girl. How dreadful that she of all people is the first to fall.

[Tamamo says 'first'. She expects more.]

So: are you coming in with me?