Foster Care Support Group
Foster care is a system by which a certified, stand-in parent(s) cares for minor children or young peoples who have been removed from their birth parents or other custodial adults by state authority. Responsibility for the young person is assumed by the relevant governmental authority and a placement with another family found.
1) I totally 100% understand where you are coming from. With foster care, it's often talked about how the child needs to attach and bond with the parents. Well, we as parents need to bond to the child as well. And it takes time. I loved my foster child from the day we met him, but it took a long time to really bond to him.
2) I have also had a miscarriage and it is so incredibly hard, so I totally get your pain. You will heal though. I promise.
3) It's in the best interest of the children to keep them together. Imagine them growing up separately and knowing they had the opportunity to be together. Also, since they are both still young, the agency will likely want to adopt them together. I'm not sure what telling them that you only want the youngest would bring.
Stay strong, you've got this!
As for splitting them up. For you to even ask that question makes me question if you should be foster parents at all. Children aren't toys, placed in your home so you can plan house. They're living breathing human beings who need families to love them. They have already suffered a tremendous loss by being orphaned. For you to even think of splitting a sibling group up, for no other reason than your own selfish desires is beyond reprehensible. Give the children back and rethink your idea of what it means to be a family.