Mr. Sunders likes to talk, apparently. A lot. Which, for the most part, Ruth doesn't mind. She keeps quiet for most of the tour anyway, glad to finally be introduced to Betty. Not because she's a girl, as Mr. Saunders so helpfully implies, but just because it's someone else, someone who hopefully has something a little more interesting to talk about. (No offense to the man.)

She opens her mouth to talk, ends up closing it again. It looks like she won't be able to say much of anything until he leaves, so she waits, an eyebrow raised just so as she glances sideways at him, a look that's nearly an eyeroll except not quite. It's only when Betty efficiently cuts him off that she finally gets to speak up, offering a small smile as she nods.

"Nuclear physics. And you can call me Ruth." She hesitates, then reaches a hand out for a shake. Mr. Saunders nods, apparently pleased with his work, and decides to leave the two of them to their own devices. And their 'girl talk', he probably thinks. Christ. "Thank you, by the way. Betty, as in...?"

Just in case she's not a fan of that diminutive, and Ruth doesn't want to step on any toes.