That should be a good felony vandalism; I hope they arrested the guy that did that, prosecute him and make restitution part of the sentence. I would bet the car is a not a total though. New M-3, what $50K. Probably like 30K in damage I would guess.
If it were me I would not want the car back and I would definitely stop seeing that woman. If this guy is that nuts, who knows what else he is capable of.