My 14 year old daughter has been diagnosis with scoliosis... with a 14 degree curve..what are chances it will get worse.. age does girls stop growing?

This depends on : Several issues including family history especially if found on both sides, the timing of her period which if she has not had is a higher risk and the type & location of the curve. This should be monitored closely for any progression. If so, bracing is usually helpful with only 1% requiring any surgery for idiopathic scoliosis. Most growth with a spurt is just before their period starts

Varies: Varies somewhat. Many girls do stop growth by the age of 13 or 14. They will also stop approximately 18-24 months after having the onset of menses as well. Xrays can accurately show if growth plates are closed. It is More likely than not that a 14 year old female with scoliosis will not need any intervention at all, but don't hesitate to see a specialist to be sure.