Interestingly, overall, the statistics (see URL below) don't seem to support the idea that women are killed at a higher rate in traditional societies where women are more likely to be regarded as property.
The big difference you see isn't gender---it's overall murder rates, which are much higher in more traditional and less developed societies. Surprisingly, the percentage of those murders that are women is often relatively lower in these countries, similar to the US (18%) or lower.
The US is in the middle range for murder rate, with 7/100k. Many East Asian and European countries are in the low single digits or even less than 1 per 100k, while the high rate countries it can be between 20 and 50+ per 100k, which is an amazing number---one in 2000 people murdered every year.
It is not in traditional countries, but in very modern countries like Norway and Germany where the highest percentage murder victims are female. The catch is, those countries have tiny murder rates, so despite the high percentage representation, murder of women is still extremely rare compared to the typical less developed country. In other words, hardly anybody gets murdered, but of the rare few who do, a relatively high percentage are female (30% to 50%)
In less developed, more traditional countries, the overall rates are often very high, but in most of them, the percentage of the murder victims who are female is about like the US. (Nigeria is an outlier with more than double the murder rate and 50% more female victims than you'd expect.)
Men are violent, yes, but there is another way to look at it. Men in the US kill themselves six or seven times as often as they kill women, and they kill other men more than five times as often as they do women.
