The sound of a baby crying is naturally distressing to us, babys cry women tend to get itchy (seriously) and man tend to get defensive (reactionary aggressive) or distressed. Essentially we have evolved the reactions to help us survive as a species, the mothering instinct says let's see if i can help baby feel better and the male protective impulse says i will make what ever is making my baby cry go away.
Additional to this I can well back up what Mak is saying I lost count along time ago when he has had to cut a really good convo short because his daughter is crying or upset, and he was in every occasion right to do so. If your priorities are any other than Child> Wife > Other family> Friends> Animals> Anything else your priorities are messed up.
I belive this woman is one of the cases of "innate negligence" meets "OCD lock in" with a slight dash or retard thrown in.