>>5670091 (pb)
Same way an abusive boyfriend should handle the breakup. Be 100% honest, give back anything that is hers, apologize, then let her move on however she sees fit. If they want to, they can offer to keep an offline (cold storage) securely encrypted archive, and permanently destroy that upon request.
You pushed flat earth.
You are good at this.
They asked for a platform to anonymously post messages and pictures. You absolutely could build that, you would have to write a new operating system from scratch to do it, control the chip manufacturing and supply chain, but before you start you might want to ask yourself why they want something like that in the first place.
My vote is to run a shitty php board with some mods and give the NSA full access.