Contrary to popular wisdom, the vampire does not require an invitation to enter a victim's chamber. Invite the vampire in? Fiddlesticks! What is one supposed to do? Stand at the open window and call out, "Yoo-hoo! Any vampire in the vicinity, please come in. I'd love to meet you." Rubbish. If a passing vampire wants in, he's coming in. No bones about it. Don't believe me? Observe.
You'll notice that he has not been summoned. And yet he is inside the house. Unless the lovely maiden has wandered into his house, which is unlikely. Did he encounter an unlocked door? Again, not likely. The vampire goes where he wants to go. How he gets in is his business.
Let's look in on the current object of his interest.
Cue the sleeping maiden.
Okay, so technically she has invited him--by giving her consent. Obviously the child vampire has charmed her with his round face, delicate little fangs and quaint manner. What of it? You use what you have to get what you want. As he did. And I guess, in a way, she did, too.
Prince Pink was played by Dollmore's Dollpire Kid Boy Shiloh.
The Maiden was played by Dollmore's Dollpire Kid Girl Definition of Hazy: Roo.