Authorities were notified by Snapchat itself after the company flagged the message as possibly illegal, and FBI agents contacted Stapp at her home just 10 days after the message was sent.
For me it's 10 days. I expect some automated monitoring with unencrypted messaging services. But automated things should work more or less immediately.
I wonder what went on for the 10 days. Was most of it waiting for manual review, FBI taking the time with... something, whatever else.
My bet is she never planned to do it because she said “half now half later” and it’s just one of those scams where you Venmo her the money and she blocks you. However, that scam is usually “safer” to do when you don’t actually have a child.