J.H.
I would try something simple out first to see if she really likes to do it. I have both my kids 3 and 5 year olds enrolled with the Johnson County Parks and Rec. Reasonably priced so you can try different activities out. My daughter goes the the Acadamy of Arts for dance and my 3 year old son goes to ATC for tumbling. They both love it. Check out their website:
http://www.jcprd.com/activities/preschool.cfm