She flushes slightly, realizing that she's shown her hand regarding how much she still cares for him. Not that she's been trying overly hard to hide it; she's just been angry and frustrated and hasn't wanted to start up an old argument without any clear solution.

He doesn't seem to be lying, though, and at this distance she's attuned to him enough that she could tell if he were more than slightly out of sorts.

"I suppose it could be less of a danger than they made it seem."

If that's the case, maybe she could untether entirely? She likes this version of Luke, but she can't say there's any particular benefit to being tethered to another person, friend or not.

"Can you promise me you won't be stubborn about this if it turns out they're not exaggerating?"

If nothing else she very clearly doesn't want him to slowly die of his own resistance to the idea.