Did you read the book? Because that's not the story, she way too many opportunities to do that, yet didn't. Only after she stopped getting paid, she did an "expose".

I hate facebook more than the next guy but this person just helped Facebook to accomplish usual evil things, and only stopped once she cannot profit. I'm pretty sure she didn't start that way or maybe even saw it that way, but objectively (in her own narrative, if you only take actions and ignore her own emotional justifications) that's what happened.