There isn't any reason to tell him and the rest of his senses are sharp enough to detect the lack of opposition around here. He has no idea where here even is. If, for instance, he knew that they were at Jabba's palace - he'd be far more unsettled by the fact that there was nobody around ...

"I've had years of experience not passing out when people expect me to."

He doesn't feel great about the fact that she's gotta hold him up, but considering the circumstances ... he'll deal with it.

"Is the ship far?"