That is highly questionable. For example, according to the US marriage laws, you can marry at 17 as long as you have parental consent. Would you really believe in a muslim place like Chechnya a marriage could have been settled without parental consent?
What kind of proof do you think would suffice in order to address those concerns? After all, she openly said "I do" in some way, so...
I think the more realistic reason for discussion is that is not how the European customs are. And since, obviously, the European customs are the best of its kind and hold the true cause of every wish of all people for all time and all places, ergo..