Evidently the media were not as interested in Mary Joe's baby as they were in Steffi and Andre's little boy, which is understandable. I searched for a picture but never managed to find one.
However, on the first night of ESPN's coverage of the AO, Cliff and Pat showed a picture of the two of them with Mary Joe and her baby. They had stopped off in Florida on their way to Australia. The little girl is very pretty with loads of black hair. Her name is Isabella Marie (I think).
Maybe if you go to ESPN and click on the icon that says something about "Chat with Cliff Drysdale" you can ask if they would show the picture again.
I think Mary Joe will most likely return to commentating in a few months. In fact, I bet she'll be in the booth for the Miami tournament, if not before. I haven't heard anything one way of the other, though.