C.J.
I don't have first hand experience since this will be our first year trying gymnastics for my 3 year-old but I found her a great gym near my zip code thru this website (I entered the zip code for Keller so you'll get the list of gyms close to you):
http://usagym.org/pages/usagymclub/findagym.html
I don't know if they have a waiting list or not but hopefully you'll find a good gym for your little girl :o)