Once the shock wore off and I talked things over with DH, we split up the responsibility of calling parents, he called the boys parents. I was really horrified because the girls mom was not upset, the mon said she knew and her daughter is on BC. DH said the boy's mom just got very quiet and thanked him for the info.
Then we double teamed on talking to our daughter. We'd already had the sex talk last year complete with making her watch a childbirth video, but we went over everything again. She was in tears and still said she's never even kissed a boy or been asked to "go with" one yet, but that she doesn't want a baby and she knows shes not ready for sex.