Kate had really intended for Castle to open the envelope and tell her what was inside, if only because he had a taste for the dramatic and he would certainly milk the situation. If Rick had ever wanted to go into acting like his mother, he could have been a huge success. They had the same theatrical flair.
"Okay, okay," she said with a laugh, edging her fingernail under the flap of the envelope and carefully ripping it open. Inside was a single sheet of paper, a paper that she immediately knew was the overall test results of the bloodwork that the Med Bay had performed to check for any complications or problems linked to genetics or Kate's age. But down at the bottom was the one thing she hadn't known, listed in all capital letters.
Kate hadn't been committed to the gender of the baby, just hoping for one that was healthy, but she knew what Castle had been hoping for - a boy. And maybe it was that reasoning that had her flashing him a big grin as she passed the paper to him, "It's a boy."