Cheerleading, tumbling, gymnastics and contortion?

Lots of questions. My daughter is 14 and has done cheer and gymnastics for 3 years. She was recently picked for the gymnastics team and they said the only big down-fall was she was too old. We should have started her younger. She is 5FT2IN and weighs 100 lbs.and seems to have the perfect build for gymnastics. All ages are good for cheer. There are always teams that are looking for strong athletes. They don't all have to be tumblers to be on a cheer team. On gymnastics she practices 7 hours a week. Cheer was 5 hours a week. As far as a large chest...there is a girl on her gymnastics team that has a huge chest and can fly through the air. I am sure she has been doing this for years though. Most people would look at her and think she was obese. But she is almost Olympic level. Hair...if long....has to be tied up and kept out of the way. As far as practice and dedication. Some girls can practice for years and still stay at beginner level. Other girls can be doing cheer or gymnastics for a few months and pick right up on everything. All people are individuals and learn at different speeds. Unless you give-it-a-go...you will never know.