Hi
I actually witnessed a similar thing a few years ago, and in hindsite i wish i had said something to back up the woman being targeted. i was in a cafe with a friend and a lady sat in the corner and started to feed her baby, you couldnt see one bit of flesh on her she was so discret. A man id say in his 50's went over to her and she very loudly it was a discusting and she should leave the house if shes breastfeeding. He was meaning so mean and the cafe when quite the staff were looking over but they didnt ask the man to calm down or leave.
That really impacted me and i said from then i didnt want to breastfeed. However my view changed when i got pregnant and i breastfed until my daughter was 7 and half months old. I did however never feed in public, i used to go and sit in the car and feed her. Why should women be made to feel like that, feel like they shouldnt be there. I know breastfeeding is not for some people but they shouldnt make people feel like me to scared that someone might start on me and start shouting at me.
I think its terrible, just dont look if its makes you uncomfortable aint it, she shouldnt have made a huge deal about it, as you said its natural.
Well done for sticking up for your wife and breastfeeding lol.