There are probably plenty of people like that. Note that your girlfriend never had to see a defense attorney.
And I’ll extend my remarks a bit. I have had clients that I thought were probably or possibly factually innocent of the top count of the indictment, but almost certainly guilty of one of the many lesser-includeds involved. That is, I have taken clients to trial when the prosecution overcharged the case, which they often did to try to force a plea.
But newborn innocent? Nope.