When I read articles like these I often get the impression that we don't have the full story. How do we go from "After she finished, she'd help classmates who

When I read articles like these I often get the impression that we don't have the full story. How do we go from "After she finished, she'd help classmates who were behind or struggling in class" to "my daughter emailed to tell me that the boys in her class were harassing her"? Those two statements are one sentence apart. I was in a technical cursus in high school, there was exactly one (1) girl in the class. And not for a single course, for all the classes. I don't remember her being harassed, but I can't speak for her obviously. I'm not saying that "she asked for it" or anything equally terrible, I'm just curious to know how things degraded seemingly very quickly? It seems important to understand what's the core issue here. I'm obviously not very familiar with US education, maybe the culture is just different over here.