If he's offering $200/mo and she accepts, it's the best she can get. If she were being offered more by someone else I imagine she "knows" enough to determine the bigger of two numbers and accept the better offer. Her options range from $0/mo to $200/mo. You think her best option, the one she chose, should be taken away by force because after reading a blog post you know how to make better life decisions for her? I find that morally objectionable.