[Oh thank goodness Arthur isn't prying, even if his mother seems a little disappointed that Arthur isn't interested in her gossip about Eames' exes, but she's glad he appreciates Berlin at least.]

"It's beautiful." [But it's less interesting than Arthur is to her right now, and she keeps watching him thoughtfully over her mug.] "I just have to say-- You seem like a sensible man, I just can't figure out what you see in him."

[There is a distinct "hey--" from Eames, but she keeps going.]

"I don't need to be worried about you, Mr. Bounty Hunter, do I?"

[She's joking. Mostly. She clearly doesn't think there's much risk of Eames being hurt here, but it's not zero risk.]