Perhaps she works because her husband had a stroke, her finances were wiped out during the last recession or by Bernie Madoff, her children lost their jobs and have moved back in with her and her husband, she is sick, etc. You don't know what her life is like or what pain she deals with every day. Why make such judgments?

Still haven't heard back from OP what airport this was. I'm with others re: people putting their feet (having shoes and socks on is bad; bare feet even worse) on couches, coffee tables, other chairs, on the plane seat in front of me, etc.) is just gross and poor manners.