Colorful word choices tend to lose their intended effect when the jargon is alien or spoken in another tongue entirely. Some of the words she's heard pop out of the other inmates' mouths don't sound nearly as vulgar to her ears as they do others, and she imagines her own sharp tongue sounds like utter gibberish to most. Like she's babbling in some sort of tangled, trader's argot instead of actual fragments of basic.
Similarly, the more she begins to embrace the Force-sensitive parts of herself, the more she's seeing that people just don't get it. Reid may understand it to a degree, but it was like he said: a lot of what he 'knew' was based purely on conjecture. John, on the other hand, has actual experience. Maybe the way his abilities manifest is different from someone who utilizes the Force, but he's still able to understand he power in ways others simply cannot.
"Not really," she says. "But I appreciate the offer."
It's comforting to know that if she does decide she wants to talk, she doesn't have to do so verbally. Like how she and Luke could reach out and summon one another without so much as picking up a comm. They just could, knew exactly where to find one another. Distance didn't matter; they could do it effortlessly. (She can't say whether that's a Jedi thing or a Twin thing.)