Working for the Queen of England

I'm only 17. And I want to move to England and work as a servant girl for the queen. Shocking right. My parents are against it and want me to stay. But they know they can't keep me forever. Once I get to England I have no idea on how to get to the Queen without trespassing and getting arrested. But how will I do it? I don't know. But I need to figure it out soon. And nothing is as it seems. the second I step foot in the castle, something magical happens. And for some strange reason, I feel like I'm out of place.