Actually it was more like this scenario:

~pumpkin hums her way along the desert landscape, oblivious to the perils that lay around the corner, when suddenly she hears, "For the Brotherhood!" and the scene turns to a slow-mo shot of Veronica punching the head off of some feral ghoul.

...."Oh, well, thanks Veronica, I didn't see-" Only to be cut off by another slow-mo shot of Rex tearing into some poor raider. ~

It wasn't like she wouldn't/couldn't fight, but those two would just fan out and look for trouble. She'd be in a vault or something, and they'd be completely on the other side of the place tearing things up. I had Boone for my exploring and he was a little more laid back. He'd just pick things off from far away.