she was earlier betrothed by her father to Prophet Muhammed at the age of 6.Prophet Muhammed asked her permission at the age of 9 and then he married.Now dont compare the age 9 with the current century. Akbar was a emperor at the age of 14 5 centuries ago?can you imagine a 14 year old governing a small group of kids today?
So dont compare today's age with the age of 14 century women.You can look at the peer reviewed scientific journal I have quoted here
questia.com/PM.qst?a=o&se=gglsc&d=98501236
....since elite women generally married around the age of puberty or even earlier...
..The marriage ceremony itself, which often took place when a girl was twelve years old, and sometimes even earlier...
..While certain biological and even psychological aspects of human de velopment may be universal -- although sociologists, psychologists, and historians debate this -- A study of the lives of elite women in England and France between 1050 and 1300 illustrates this reality...
