Priorities.

Brina is in good spirits because King Edgar and Queen Elora are here now. It's been almost more than three months since Brina and Louis came to this town.  

They clearly missed their younger son and daughter in law. 

Thankfully Ethan was taking care of everything and the leaders of the noble family are also very understanding. Court us no more a hell but one entity, united and understanding.

They might have thought that Brina will be safe outside rather than inside the palace. So, they supported King and assured Louis to extend the vacation without any worries. 

Even though Greta has been taken care of, who knows what might happen?

Adding a little poison or making Brina fall from steps are enough to make her miscarry. So, it's better she stays somewhere safe till she gives birth. 

Although everyone knows that these things  might not happen, given with full security, they are afraid and are still in that fear of what might happen.