It's sometimes easier to blame the daughter than the father, especially if the father is bringing the money home to support his wife.
so money for them is a big issue as a poor family that does things that will seem alien to those have never been in this scenario. Also in parts of Russia a girls life is worthless just like the Middle East, so it's better drop the daughter as a liability as you no don't have to support her. Religious bigotry also plays into her mentality, especially as Natasha's reputation precedes her and that can go both ways psychologically depending on what she learned from her past experiences.
If you think this is far fetched, I've seen it happen in Western Europe especially for those countries that have a strong religious culture. Boys can get all the fun, but if the girl tries to the do the same they're flagged as a slut or whore. If they are raped they're automatically blamed as being provocative and men can't control themselves. There's been three high profile cases in recent years for this and I think you'd be able to work out which country I'm referring to.