Answered by Ustadh Tabraze Azam
In order to know when a child has reached maturity do we have to use a lunar or a solar calendar?
Is the age of maturity for a girl 9 full years?
I pray that you are in the best of health and faith, insha’Allah.
What is of consideration is their age in lunar years.
However, nine lunar years is the minimum age for girls. She isn’t considered to be an adult until her first menstrual period.
Please see: When Should Children Start Praying?
And Allah alone gives success.
Checked & Approved by Faraz Rabbani