It's hard to say for certain. Sometimes stories like 'La Esclava Blanca' combine real-life elements with fictional creations to make an engaging narrative. You'd have to do some research to know for sure.
I'm not sure specifically as I haven't read it. But it might be about Rosa and Blanca's experiences while reading a story related to the street. Maybe they discover something new about their neighborhood or the people in it through the story.
Rosa and Blanca are the main characters in 'rosa and blanca reading street story'. These two characters are presumably the ones who drive the narrative forward as they engage with the street story. Their relationship with each other might also play an important role. For instance, they could have different interpretations of the story, and their discussions about it could form a significant part of the plot.
Not all of it is based on true stories. It's a mix of fictional elements and possible inspirations from real-life incidents, but it's not a straightforward documentation of actual events.
I don't have enough information to say for sure. It could be fiction, or it could have roots in reality that have been adapted or exaggerated for a particular purpose.
I don't believe it's true. Most of the time, when a story has a name like that, it's made up to capture our interest and take us on a fictional journey rather than being rooted in reality.