Sir the power of the eye can change till around 21 years of age, mostly in minus number people it goes up. Laser refractive surgery can be opted for but she will have to wait for the age of 21 and there are certain prerequisites like stable power for last 1 year and apt corneal thickness and curvature. So if she meets the criteria there are lot many options to get rid of the power like LASIK, SMILE, ICL etc.
Next Steps
Regular six monthly eye check up, Annual Dilated Retina check up and regular spectacles use.