Our personal policy, is if you join a team, or begin a season, you're committed until the end of that season.
That being said, we've also learned from experience to try to give the kids as much information as possible before we make the commitment... "Now, you know you're going to have to practice your piano 30 minutes EVERY day, and you won't always get to play the songs YOU want to play." or "Soccer is very hard... It's a lot of running and sometimes you might get kicked or hurt." We explain that outdoor sports in Texas are going to be hot. And that even if a friend calls for a playdate on a practice night, you already have a commitment every Tuesday night for the season.
Make sure they're informed for future activities, because this will happen again. My oldest (10) has done soccer, karate, piano, and softball. Now she's talking about guitar (but she's also saying she'll buy the guitar with her birthday money).
For this season, if you choose to keep her in Cheer, really play up the fun parts of it. Have her show daddy how she learned to ____. Try setting up a playdate with one of her teammates. Invite a couple of the girls and moms to go for ice cream after practice one day. Try to get her involved.. right now she may just feel like she doesn't fit in, or that she doesn't know as much as the other kids.
Finally, lots of area rec centers (and some businesses) offer a "Sports Sampler" kind of program. If your daughter wants to try something else in the future, you might begin with a program like this, so she understands the basics of basketball, volleyball, soccer, baseball, etc. The program by us is something like 6 weeks (1 night a week), and they play a new sport every week. When she doesn't like a particular sport, find out why (was it the running? did she get hurt? ect) - it will help you to better choose future activities if you remind her about her likes and dislikes with past experiences.
www.familyeguide.com Free guide to affordable family activities in Lewisville, Flower Mound, Highland Village, and the surrounding communities.