infernal, take your wife to a powersports dealership near you. if your near midland texas you can come by where i work at "midland powersports". alot of the dealerships have trails you can ride on, just have to talk to one of the sales guys. that way she can test ride them, and find one that she likes.
if you get a honda, get one that has an f on the end of the name. ie, crf150f. its not the race version so its not quite as powerful and has a slightly different suspension tune, its designed for just going out and having fun.