In a recent interview, on screen ‘Castle’ father, Nathan Fillion talks many things, including Molly Quinn. Here’s part of the interview where he is questioned about Molly.

One of my favorite things about the show is the relationship your character has with his daughter.

You missed it! Molly (C. Quinn) was here last night. I haven’t seen her in a week and a half. She wasn’t in this episode we’re doing right now. I enjoy her tremendously. The only problem I have with her… when she started the show, she was fourteen, going on fifteen. Now she’s seventeen years old. It’s tough meeting someone and going, ‘Oh my god, you’re the greatest little kid. And…oh my god, you’re actually becoming an adult.’ I don’t even want to know. ‘Don’t talk to me about boys. I don’t want to know about that. Okay, here’s what you’ve got to do. Don’t call him back! No… okay.’ I get twisted up! It happened to me on ‘One Live to Live,’ right about the same age. I had a younger sister on the show. And all of a sudden she’s grown up and getting her own apartment in NY. And I was like, ‘What? You’re a child!’ And she was like, ‘Nathan, I can vote.’ Arrgh. It was driving me nuts. Watching someone you consider a little sister and feel a certain amount of responsibility for grow up. I think that’s a difficult thing. And I’m not even a father! I have the sin of pride when it comes to Molly. I don’t know why. I am not responsible for her amazing-ness in any way. She has great parents. I get all, I don’t know, wrapped up. It’s tough. It’s tough for guys who play people’s fathers! [laughs] It’s tough for people who play fathers on television.

You can find the rest of the interview here:

Nathan Fillion Talks Castle, Firefly, and What’s Next