I happen to be a female Audi driver and I have experienced this issue to...but I think it is just the way we drive. From what I can figure...I tend to hesitate a little when accelerating...especially in traffic areas (such as lights or stop signs)...mainly because I don't want the car to get away from me. I have only had my A6 for a few weeks though (maybe your wife is just taking longer to get use to the performance of the car). I was also told by someone that the hesitations on acceleration could be due to putting the lower grade gasoline in instead of using the premiums! I am not sure if she does that or not...but maybe that could be a problem too!
Personally, and yes guys you are more than happy to quote me on this, from my point of view as a woman driver...I am more aggressive when I get the car up to speed...but that take off can be a little rough on me!

Only being honest! This is more car than I have driven in the past and I LOVE the power it has...and it is such a thrill to ROMP on it...but I do hold back in most intersections and traffic situations!
Loads of luck!!
LT [sm=devilangel.gif]