"She is the closest to my heart. She is my wife and mother of my son. She's also given me a beautiful daughter, even if she isn't mine by blood." He grinned. "That doesn't mean that there can't be others near other body parts. They make life a lot more interesting." He didn't mention that there was someone else who occupied a large part of his heart. Severus would not be a subject he could discuss with his father.
"I do trust you, Father," Draco said honestly. "I don't think for a moment that you'd come here and poison me." Of course, that was a very real possibility, and he needed to find a way to test that potion before he died from it. "However, I do not trust anyone one else, including my mother's relatives. They might say that it's the safe and it's not. How would you know? The Potion maker could be lying as well. You don't mind if I have one of the house elves try it a drop of two. If they survive-" He shrugged. "One can never be too careful. That still raises the problem of Tracey and my child, doesn't it? If it's not safe for a pregnant woman, I doubt it's safe for a newborn. How do you suggest I take care of this, when I don't know what 'this' is?"