Hi Mark I have been doing a lot of reading and I would suggest you turn the negative thoughts around to good ones. The reason being is that the negative thoughts will start to control your actions and words without you knowing it. Also, could you work out a deal on the car, if she gets this car, then that is it for a while on the big purchases? Or get her to help with the money matters so she can see where the money goes and how the car purchase would effect those finances. Above all though, stay positive about her, see the good in her and let her know what you see. Stick with her and talk it through, let her get her feelings out and support her. Look at from every possible angle, a car purchase is cheeper than a divorce, in money and emotional pain. I know all too well about that. trust me on this one.