The Runaway Princess- a nalu fanfic

Princess Lucy had escaped from her castle and started living in town, in disguise.
Soldiers and armies looked for her, but never found her.

And so she became a legend-
'the mystery of the Runaway Princess'

One day, an announcement had come that any girl can sign up in a competition on to being the next maid working in Prince Natsu's castle. The chosen girls in the sign up will be able to enter the competition in Natsu's castle.
Lucy decided that she will sign up anyway(only cause she saw how much salary she would get if she's a maid), thinking that she probably won't get in at all.

But she does.

The moment she entered the castle, she noticed how claustrophobic she was, and had a difficult time competing in it.

Will she make it into being the next maid? Will she get rid of her fear of castles?
Will she fall in love with the prince?
Will the prince fall in love with her?
More importantly, will anyone find out about her true identity,

The runaway princess?!!