Prince!!!!!!

U do realise that she gives out information about him to the queen right?

U do realize that over all she still tries to help him the best she can, right?

she’s only doing that to live, she’s prevented bad things from happening by giving more info to him

You do realise she chooses what info she shares with the Queen leaving out or changing certain bits so the prince will remain safe in the end right?

Basically she's a double agent. She gives bits and pieces to the queen to maintain the facade, but leaves out crucial pieces of information when necessary. Of course if she's on the spot she might have to give up information she doesn't want to reveal to make sure she's not exposed. But as said, overall she's working for the prince. #DOUBLE AGENT

Yes but this is what only we readers know.
The prince may misunderstand that she is betraying him.