[Whoa, wait! That adds a new dimension to things; Mash's eyes widen in surprise. She hadn't really expected to encounter another Master here. At least he's clearly on good terms with Ritsuka, and so there's no reason to be anything other than fascinated. Honestly, it's something of a relief to have someone else around she can be open with who'll understand the situation between Mash and Ritsuka—she can hardly go around telling just anyone that Ritsuka is her "Master." It sounds a certain way.]

Oh! I didn't realize . . . then I can tell you I'm her Servant without it sounding strange.

[There's pride in her smile. Mash knows she has a truly great Master. Why not feel good about it?

But they are also in the middle of something. She almost forgot!]

—Oh, what else can I do while we wait?