The more detailed analyses of Momma-Tossed-Me, Flipper and steve2 make quite a bit of sense, but at the end of the day, we're all just speculating here.
Giving the consultant the benefit of the doubt, PaintedToeNail's take might be right on the money:
"Maybe the consultant JW felt she didn't have anything really in common with Open Mind's wife and wasn't comfortable just making chit-chat."
This is probably best-case-scenario for the consultant and JWs in general. And if it's true, then it was a very unremarkable situation on the whole. Except for the last bit. That's the part that demonstrates the power of the JW religion.
If the consultant & my wife had both been Baptists or had formerly attended the same school and my wife said "Oh, you went to XYZ High School? So did I." If the consultant was still feeling non-chatty, she could say "That's nice. Small world." and continued to not pursue a conversation. But if a JW finds out that a recently-met stranger is a fellow JW, there's a very strong expectation that at least a few more sentences of dialogue MUST take place, IMO.
Picture this dialogue:
My wife: "Oh, I just heard that you're a Sister!! I'm a Witness too!"
Consultant: "That's nice. Small world." *walks away*
If the consultant did that, she'd be sending up big red flags that something's not quite right in her JW world.
In retrospect, my wife used the power of the cult to mess with this lady. And it worked. Yes, it was petty and manipulative.
(And it was a little bit of fun. )
The more detailed analyses of Momma-Tossed-Me, Flipper and steve2 make quite a bit of sense as well, but at the end of the day, we're all just speculating here.
Cheers,
om