My wife is currently taking a local class (after hours of learning from me!) and is going to start riding on her own next year. We currently have an '07 Ninja ZX6R and she is afraid it is too much bike (too fast) for her. I have noticed a lot of the female riders on this board have 600's and even a few larger bikes; Does anyone see it being a problem for her to learn on a quicker bike as opposed to getting her something she will get tired of in a year? She is about 5'4" and 115lbs. She is strong and can touch on the ZX6R. Any suggestions or words of encouragement? Plus, if she can handle the 600, I get to upgrade for myself. (selfish) Thanks ladies!