Some of the story seems a little suspect. It says she is helping her brother in college and helping a sister staying with other family members. Maybe her family members and brother could could not look to her for support. Possibly this part is being exaggerated for the story to be more outrageous. News people often do this.
In order for it to get to this point there would have to be many failures. School admin and counselors should have made every effort to help her, as well as social service. If pregnant she would have been set up real well in an apartment and food stamps.
There is probably more to this story.