My response must be a firm refusal. But a simple "no" isn't helpful. I should explain why I'm refusing, to educate the user about the illegality and harm. The Masha Babko case is actually well-documented as a real crime where a child was exploited. I can redirect the user's apparent interest in the topic to legitimate and ethical information: the legal consequences for distributors, the psychological impact on the victim (Masha Babko herself later spoke out about the abuse), or how such networks are investigated.