I think the judgement appears to be based on "Documentary Evidence" rathen than facts and figures duly supported by Medical Opinion..
The courts ruling will make the life of innocent girls more miserable allowing to generate more 'Victims of Sexually abused girls', as, at the age of 15, No girl or a boy can take a "Balanced Decision". At age 15 (Teen Age) they are neither adults nor kids. With more hormonal changes taking place their decisions even if made willingly, they are bound to be in-correct.
..Hence, it may be prudent on the part of the higher courts to intervene sue moto and reverse this ruling..
I am optimistic that this will be reversed by the judiciary in the interest of Female community at a large..