Herridge is a smart woman, I am guessing she encrypted her sensitive files.
She may have encrypted her entire hard drive.
I would have in her position.
It won’t stop them, but it would. Slow them down.
Most likely the computer is in the hands of the FBI by now.
They have software that will crack any encryption available to the public. It is only a matter of time.
As an aside, I keep all my passwords under lock and key and they are so encrypted (by gibberish) that most of the time even I can't figure them out.