Like goldfish, and equally useful in the real world.
Actually, sometimes when people move they dump their goldfish into a nearby river. Goldfish are of the carp family, and like many fish grow to fit their environment. So a little goldfish in a little bowl or aquarium will grow quite large in a decent sized creek or river. And being carp, they are like the stream's vacuum cleaner, something useful. And some people catch and eat carp, also useful.
That said ...
Omarosa has already taken one try at Hate-Trump fame, promising a book with
revelations. It was a nothingburger and bombed. So this is her second attempt for Hate-Trump fame and fortune.
Setting that to the side, consider what a Presidential campaign - successful or unsuccessful - does with all its records and stuff after the campaign. Many financial records are retained due to campaign finance laws - for compliance or to be able to respond to inquiries beyond any mandated retention period. Many records - financial and contacts - are retained for use in future campaigns. Other records and materials have no foreseeable future use and are destroyed (maybe a few materials are retained by staff people as mementos) because people's privacy is a concern, and no one wants to pay to store stuff that has zero useful purpose. This latter would be done in a supervised manner - instructions given, designated collection locations, a secure shredding company contracted for the destruction.
So, what might Omarosa have actually seen/heard? She was in charge of outreach to "the black community". She had zero to do with foreign policy
(Russia, Russia, Russia) and might never have even seen anyone who did. Given her position and function, she would have received instructions regarding what records to retain and what records to have destroyed.
A normal process. This is probably what she's trying to milk for $$ and fame that will bridge over to the next opportunity for $$ and fame (like Avenutti, but probably without breaking any laws). She's playing DUmmie-grade Progs.