Wooo ...you are gonna be surprised.
Spoil it
Spoiler alert............
Grace is illigetimate daughter of the king/prince ( I'm not sure which one but definitely royalty) you know her mom goes to missions?? Yeah , she got pregnant from one of those missions. But her mother didn't knew that while she was carrying grace. They found out after her birth cause her eyes were blue. Grace's current father also knows that but wanted to keep Grace , to use her against the royalty.
Is the one with the freckles Grace's dad?
They have the same eyes and brunette