I think your idea of arranged marriages are a little different than those from some places. An arranged marriage is generally where parents pressure their children greatly to get together with someone of their choosing and marry them. Whether it is because the families are close and it is something that would really make the parents happy or because they chose this particular individual due to their personality/particular qualities... or both. But the situation generally involves both the guy and girl getting pressured to a pretty solid extent.
What you described comes across like she was presented in chains with a bow on her head. Not even close. For one thing I'm relatively sure that would have been very illegal. We got along well enough, and probably would have had quite a charming life. I guess. But the truth is, it just seems like that way of doing something wouldn't have exactly been fair to either of us, as we wouldn't have had the opportunity to find someone of our own choosing that we would care about. While we did get along, we had almost no mutual interests.
It wasn't from her that I was "running for the hills", and I didn't mean to imply this. It was the situation in general. Perhaps it was my own selfish thinking that lead to my conclusion that she, too, would have been unhappy if we had followed our parents wishes. Still... I don't at all regret that decision.