Your next-door neighbor's two-year-old broke your most expensive vase, and your neighbor hasn't offered to replace it. Your best friend expects you to shop at the boutique she just opened, though her very pricey clothes look terrible on you. And your sister says she needs $1,500 to send her child to creativity camp, but you think what your sister needs is a job. What do you do? Such tricky and emotionally charged dilemmas involving money are...