I'm an adoptive mom, with NO intention of ever ending the contact with our sons birthmom.
I would find alot of consolation in the fact that they are involving their other child in your family. They seem to have the right idea...that it is a joining of two entire famillies. You guys are in the same scrapbook club? I doubt THAT is put in place with the agency!! LOL
Sounds like you have a wonderful relationship, and you should discuss your fears with them....They have been in your shoes before, they worried if you'd follow through on your adoption plan after the child was born. They will understand and reassure you as best as they can. I know you will still worry....but i hope that gives you some peace
Lots of luck
Leigh