Acro (also called acrobatic gymnastics) is done with 2-4 people. My 14 year old daughter is a "base" in a women's pair. She has a 9 year old "top". They do gymnastics and tumbling together. They do tumbling runs and lifts with a lot of balance. USA gymnastics is trying to make it an olympic sport but it's hard to train the little tops for a long time and make them good enough before they outgrow their bottoms. So there are not very many elite teams. She is having fun and it's good exercise. The coach claims it's safer than regular gymnastics because you actually have a second or third person to catch you if you're falling.

Not bad at all! I would love to see pictures of your daughter.