The thought gnawed at Zane during the long flight to Las Vegas. She sat quietly beside him, sometimes dozing, talking only if he asked her a question. She had the drained look of someone who had been under a lot of pressure, and now that it had eased, her body was giving in to fatigue. Finally she fell soundly asleep, her head resting against his shoulder. The pregnancy would be taking a toll on her, too. He couldn't see any physical change in her yet, but his three older brothers had produced enough children that he knew how tired women always got the first few months— at least, how tired Shea and Loren had been. Nothing ever slowed Caroline down, not even five sons. At the thought of the baby, fierce possessiveness jolted through him again. His baby was inside her. He wanted to scoop her onto his lap and hold her, but a crowded plane wasn't the place for what he had in mind. That would have to wait until after the marriage ceremony, when they were in a private hotel room. He wanted her even more than he had before.