Hartnell is known for being a really really nice guy, despite being a nightmare on the ice lol. He's more into the fans than any other Flyer I'd say, and more so than most in the league. I haven't personally met him, but my brother had press passes for almost 10 years & he got into the locker-room for post game interviews and was able to chat it up with MANY Flyers over that time, including Hartnell.
He says Hartnell was one of his favorites, an incredibly funny guy as well. Great choice on the person for your daughter to meet
Plus, Hartnell has around 3 kids of his own; if I'm not mistaken.