Does he dare bring up Cassian? She knows who Bodhi is, but this has been such a strange, piecemeal thing, little bits of the Jyn he knows (and many of the Jyn he doesn't know at all, which is probably most of her, realistically) surfacing at random. "Someplace safer than wandering around alone when you don't feel well." Leaving aside what's going on in her head, she doesn't look well. He's always been prone to getting sick himself, and recently, well, he's got encyclopedic knowledge of various ways bodies fail their owners. It's a solid argument.