OMG obviously she is at the airport to get on a plane at a certain time. Maybe the baby is hungry at the same time? Why criticize someone for everything they do? Get over yourself!
I agree with joann, she shouldn't feed her baby while WALKING. Of course she needs to feed her at the airport since she's obviously flying somewhere, but Mrs. Richards ought to sit down in a possibly quiet place until her daughter is done.
I mean, I also wouldn't eat while walking, so why should my baby?