It is a neat feature, I feel. I like it. It makes the selection of best answer more personal. If the mom has used her name in the post then her name appears on the notification. If the mom posted anon, then CafeMom's name appears.
I depends on if the person posted as anon. If so then the CM team sends the message to keep the OP anon. If the person did not post anon, then it comes from that person. They just started that, I think.