This was the threat:
"Once he had coerced Alice into sending intimate images, Fordyce convinced her that she was complicit in making and sharing child sexual abuse material. Fearing arrest, she kept everything secret from her family and friends."
And it is a pretty credible threat: https://slate.com/technology/2019/08/maryland-sk-court-case-... https://www.wnyc.org/story/9114-sexting-teens-legal-straits-...
Curiously enough, no one even thinks of holding the government/legal system responsible.