Well..........Depression is a funny thing. It's estimated that less than 20% of women with depression ever seek treatment. Most people don't even know what's wrong with them, and others are afraid that all their friends and family will think they're crazy.
Medication helps people. But notice there are several antidepressants on the market... what works for one person may not work for another. Then if someone receiving treatment does something like this, people want to blame the drugs. In a way that's true - maybe the drugs weren't working.
It's possible to be so down that you can't think straight. That's what causes people to do unthinkable things. Because they can't think under the circumstances.
This woman is sick, very sick. I think Susan Smith was just plain bad. But admittedly, sometimes it's very hard to draw that line.