Am I even getting the safety thing right? Maybe not.
Nope. Our death rate is about identical to Germany's. The biggest threat to our survival on the road is STILL drunk driving, not SUVs. And most fatal accidents are single car accidents driven by young males early in the morning (midnight to 6 am) with alcohol and speed being the major factors.
Less than 5% of SUVs roll over and less than .001% of SUVs are involved in fatal
rollovers. Twice as many cars roll over annually than SUVs, though the percentage of the car population that rolls is lower.
All in all, the only arguments against SUV ownership that aren't truly weak are the arguments for fuel mileage. Large SUVs do get poor mileage.
No one needs ANY new car, and no one needs a sports car, either. Using need as a basis for telling someone what they should or shouldn't buy is an exercise in futility. You need to ask her why she WANTS one, then determine if anything YOU like fills those desires.