When bio family no longer wants contact, but adoptive DD does
My 5yr old DD knows all about her adoption and about how we became a family. We adopted domestically and have an open adoption. Over the years, our contact with DD's birth mom has decreased and, at this point, we have not heard from her in about a year. DD's birth mom has a son older than DD and DD knows about him. She's very proud of having a brother and likes to talk about him. Lately, she's been asking if she could call him or visit him (he lives on the opposite coast). We tried to reach out to DD's birth mom recently, but she did not respond (we also reached out a few months ago, with the same result). I don't want to pressure her if she is no longer interested in keeping in touch. However, I don't know how to explain to DD why her birth mom does not want to have contact with her and why she can't talk to her bio brother.