This is a hard thing, when my kids were young and I showed and raised Shih Tzu, only I knew which dogs we were going to keep. I never wanted the kids to get to attached so I had them help with the interviews with the new owners and I had them make picture books for the new parents. Looking at your daughter , this is going to be very hard on her but if you are going to continue to breed it is something she is going to have to get used to. Maybe you can explain to her how much the new owners need a yorkie in their house just like she has one in hers.
Or you could just show your husband that picture, I am sure that girl has him wrapped around her finger....
Best of luck to you , it is not going to be easy, one thing for sure I would have the new owners pick up the puppies while she is at school.....
Good byes are just to hard
Debbie Ray
www.sumtoiyorkies.com