The Redline Conquest Jr and Felt F24 might be worth your consideration. The degree of growth spurt varies a lot, but you might want to contact your pediatrician. There are some standard formulas for predicting adult height based on height at around 2 years, they may be able to give you an estimate. Most girls have their growth spurt just before menarche. I was all through growing at 12. Of course you should also consider the height of both your family and her father's.