No need to generalise from one particular case.
There are plenty right here in UK.
This from BBC site,date 2003.

There were 12 "honour killings" in Britain last year - six in London, according to Scotland Yard.

But Ram Gidoomal, of the South Asian Development Partnership charity, told BBC News: "There are many more that go unreported."

Victims were sometimes taken abroad before being murdered, he added.

It was estimated there were more than 13 honour killings worldwide every day in 2000.

Entire families can be involved.

And women have even been murdered for the "dishonour" of being raped.


The question for us is if Heshu had gone into a police station saying she felt at risk would she have been treated with the urgency her concerns warranted?

Metropolitan Police Detective Inspector Brent Hyatt
Mr Gidoomal told BBC News: "There was a case a few months ago, where a mother and her son took her daughter, his sister - and she was expecting - and murdered her in cold blood here in Great Britain."

This from the Independent, 2007.

For dozens of couples in the UK, such threats have become all too real. Police are now investigating more than 120 deaths they suspect of being "honour killings". It has been estimated that 12 women a year die in the UK as a result of such terrifying acts.
http://www.independent.co.uk/news/uk/this-britain/love-that-can-be-lethal-muslim-couples-in-fear-of-honour-killing-455174.html