What background? The “that’s how the rural people do it” background? Because that’s also irrelevant. And she should know better anyway.
I grew up in a third world country. Cat calling women was the norm. I haven’t cat-called a woman in decades. If I said “well, you know… that’s normal in my culture, everyone does it” after being educated and reading a lot, then my background justification would be just bullshit.