Omarosa Manigault claims she recorded General John Kelly, the President's Chief of Staff, firing her. That, in and of itself, suggests questionable judgment about letting her into the White House in the first place. But the troubling issue is that Manigault claims the recording came from the Situation Room.
Recording devices, cell phones, etc. are not permitted in that room. It is a secure facility for the President to receive confidential and often classified information. Taking a cell phone or other recording device into that room could compromise our national security.
We can debate the merits of hiring Omarosa Manigault in the first place, but this really is not debatable. There must be absolutely strong deterrence in place to prevent any other person ever doing something so foolish. The strongest deterrence would be prosecuting her.
On the strong chance that she is distorting what happened and/or the location of her firing, prosecuting her would also clear that up and, should she walk it back, cast the credibility of her book into jeopardy.