Aw. Well, he doesn't know what she's saying, so that's fortunate. You know she has to make things sound dire or Fastolfe will just take his chances with Graham. Graham's the one who suggested that she claim he's too "stupid and macho" and to try to get Fastolfe's cooperation. So, yeah, she's playing up Graham's singlemindedness and violence. (And really, she's also dissing the rest of her team, including her precious Rangin, as well as Starfleet!)
(Don't forget that before she left, she was about to express concern for him, but didn't want to embarrass him in front of others. And that's despite the fact that the last time she felt sorry for Graham and tried to treat him like a guy she cared about, he got all ragey, grabbed her, lifted her bodily off the floor and pushed her over to the wall!)