Anyone can make a threat. There's a bit of smarts needed to classify a "threat" as credible or not. Only really a law enforcement officer can credibly bring charges against you. Unfortunately, we live in a society where someone with more money than you can use the courts to harass you, so you even if you don't fear illegitimate felony charges, you can get pretty much get sued for any reason at any time, which brings with it consequences if you don't have a lawyer to deal with it. So I understand why someone might be scared in this situation, and luckily they were able to find someone to work with them, pro bono. I really wish the law had some pro-active mechanism for dealing with this type of legal bullying.