Thanks guys. I'm glad I handled it properly and it is good to hear that separation is not always the end.
A bit more on what transpired after I posted last night. She asked if she could take the dogs with her. I hesitated but eventually agreed (hard to do, because I love my dogs).
She then started crying and said she needed the dogs with her because she "can't lose everything."
I have no idea what was going through her head and was a bit surprised because she has seemed very happy and content with her decision to divorce.