It was obviously a bad call on her part, but it is so difficult to raise a kid and be 100% perfect until the kid is, well, old enough to take care of him/herself. One split second, one moment, one bad call among a thousand good ones, and a tragedy happens. Bad luck sometimes kicks your ass. So to go off on the mom or dad in a situation like this, right after they lost their child in what seems an accident, is unresponsible, at best. They may be the best parents in the world, just made one very bad mistake and this happened. Sometimes people lose the correct perspective and fall into emotion-filled tirades. Should at least wait to see an interview or something.
And maybe the Zoo should get some blame for not having security peeps standing around dangerous cages or having a safer exhibit. In fact, maybe the railing/fence (never been there) are a security hazard in itself. Alex wrote above that that thing is hard to see, so I bet a lot of parents will try to hold a child up so they could see better. Just that this time, this happened.
I certainly don't think that calling for sterilization of the mother is the right response right now.
btw, I think Geezer just set a record for most single-day insults on LGP. Towards the parents, I mean.