Not sure what is meant by the word tactics. For my sake, it has de-escalated our relationship in a big way. Not being a crying, whimpering mess begging someone in a second childhood to return home to responsibility he doesn't want has been a good way no matter how you look at it. I feel more at peace, I'm sure he does, and the kids are living through that.
How is it making YOU feel. That is what matters. I think her method is basically just what you were doing before wasn't working so try something different. Experiment and take notes. How can that be bad?