Re: Family honour?

Why did the parents attack their daughter and sister and not the boy concerned?

Because she was closer?

Is it because they recognize she was indeed consenting, and therefore she was at fault for disobedience?

Well of course, but it has nothing to do directly with why her and not him.

And was letting her do what she wanted dangerous for their family honour?

In India it is. Intermarriage is still rare in India. Most intermarriages happen among Christian Indians, and then Christian Indians (Catholic and Protestant alike - but not Nestorians, who are much older and integrated into the complex ethnicity system) are usually already stigmatized as they overwhelmingly come from the lowest of the lowest castes, so it makes no difference to them anyway.

We might not like it, but it is a lot akin to a white-black relationship in the old American South. You would have tried to stop your children from one if they showed any interest.