I lean toward @tinyfaery‘s take on this, even though I consider it probable that Flynn does have something to hide. From her profession, she knows what she’s talking about.
There are plenty of things that, even if not illegal (and even if not true), can cause you a lot of unpleasantness if they’re brought up in court. Having to go to court and testify about anything is unpleasantness in itself. In fact, just being there (even as a spectator) is pretty nerve-racking if you’re one of those people who worry that they might be guilty of something they’re pretty sure they never did. The power to handcuff somebody and lead them away to be sorted out later is awesome and frightening.
As a new driver I once ran a red light right in front of a cop, probably out of nervousness that I might do something wrong. As soon as I realized it, I flung up my hands in horror. To his credit, he laughed. I wouldn’t want to make an equivalent mistake in front of a judge.
You never know. I have seen what looks to me like judicial caprice in the courtroom. And one of the smartest people I’ve ever known, a savvy businessman who had to testify fairly often in civil cases, said that once they get you on the stand the lawyers can make you say pretty much anything they want.