I don't like her husband.
What's wrong with spending $100+ every 3-4 months on running shoes that you use on a regular basis? People will spend $100+ on a dinner & drinks in one night and not blink an eye. Why do people get so uptight about spending money on health & fitness?
Also, it sounds like her coach put her in Newton shoes, which run around $175. If you run regularly, your shoes will wear out. Big deal.