There's no evidence that shows that Huma was arrested.
If she was arrested, I would think that the media would cover the arrest and go after the DOJ and the prosecutor.
And I see no prosecutor who would want to prosecute her.
If you were conducting a sweeping law enforcement operation requiring time to go after all the players then would you want the public/media to know about it every step of the way. Would you want every corrupt player to immediately know about it? Would someone like Huma be itching to make it public. What if they get bail or some such thing by promising not to do so?
Would the MSM even want to tell the public about it? They don’t even tell you what they do know. Think Big.