I don't really think she is going to cause that big of a stir. There have been female drivers in feeder series before, they got a tad more publicity, but not much. Although attractive women do tend to get media attention... Feeder series don't get much media attention what so ever in America. Hell, main series don't get much media attention. Motorsport just isn't something people seem to care about...
What was he reason to choose Indy Lights? Why not attempt British/Euroseries Formula 3, or Formula Master? A feeder series in Europe has a better chance to produce a career then a feeder series to a series that in itself isn't very popular in America.