Her son died a few months ago from drug overdose ... I would have to speculate that the same happened to her, don't really think suicide as she has just had a baby. Surely she would want to stay alive for her child?
It takes very little effort to show a little humanity when someone dies.
If you've got some sort of problem with this woman whom you've probably never met, there are many ways of showing it without coming across as a total arse.