She's going after the money.
So we have the motive, which appeared to be there all along.
I don't claim to know what happened in Andrew's case. But we do know that some of these cases are about people wanting to get rich, and who are willing to lie to do so. And we also know Giuffre is making an extra-territorial claim about US law, which won't fly in the UK.
Now we have things out in the open.
Probably doesn't do the DOJ case any good.