Half-siblings... it's complicated

I'm confused...is your daughter's adoption finalized? If so, then the state can't make you do anything.If she is a foster child and the adoption is NOT finalized then you do have to do the visits they request for siblings.However, that does not mean bio mom is getting reports on your personal information and I would make sure that the visits are done in a neutral place with you there. If bio mom has already TPR'd then she doesn't have a right to see dd anyway.I'd also say that all the information about adoption and being open about it and all that...it's great!:) However at 21 months old, she is not going to understand anything about siblings or that the baby is her brother. Doesn't even need to be said - and likely all she'll do is "play" with him a bit and then like any toddler, ignore him.;)So I think a lot of your worries on telling her things etc. is unwarranted for now since she is so young. And once you finalize, I can't see them forcing you to do sibling visits?