Ever heard of the Xeer system? Every family has elders that will fight for their behalf. Unless the father is a scumbag who sells his girl off to the highest bidder he will flex his muscles if his daughter is not happy in the marriage. You underestimate how powerful qabil is back home.Thanks for proving my point. Brothers and fathers is not enough. People need legal protection in which they can go to the Qadi. What happens if her brother and father are dead, weak or not around?! What happens if the man refuses? The brother and father would have to fight him which would end up in dire consequences.
Would you feel protected if you couldn't go court but you had go rely only on family members? For things like your house and land ect? No. Marriage is like any other legal institution.
Thanks yet again for proving my point.