and all the time, she was using him. She probably went into the WH to write a tell-all book.

Presuming that it will be ruled null and void, this would open up a huge can of worms for the WH since it would free every former staffer from their NDA's. Fart's lawyers may feel they have no choice, since to do nothing would be the same as having no NDA at all, but this is likely to end badly for the WH. They would have a much better case against Omarosa by going after her for security violations.

Once Trump's bogus NDA is proved invalid... expect a torrent of tell-alls

Public employees can’t be gagged by private agreements. These so-called NDAs are unconstitutional and unenforceable. https://t.co/IyYqScsESu

— ACLU (@ACLU) March 19, 2018
https://lawandcrime.com/opinion/if-omarosa-really-did-sign-a-non-disclosure-agreement-its-probably-illegal/

I hope this is true if this case eventually goes to court.

She was a Trump Campaign employee.

Enforceable up to 1/20/17 and not thereafter? Covers all activities and knowledge up to that point?

I don't know jack about NDAs except that they scare the fuck out of people who sign them.

of the NDA she signed.