Angelina
I think there should be at least a few weeks before unlocking,after she asked.So,if she would ask it on her birthday,or close to it,maybe make an "exception" and tell her it is noticed,and,if it is still her choice,in,let's say,1 month,it would be unlocked.
But the rule stay the same.If she would ask for it a week after her birthday,for example,she would have to wait until her next birthday.