I'm all for investigating her. But unless they turn up a crime committed recently about all you can count on is her being voted out of office.The NY Law Review Board could remove her license to practice.
Then there's the Ethic Boards about all the weird documents filed.
Every court case she has been even a small part of would be called into question.
The question of limitation wouldn't matter.
Her only option would be to self deport before the US Marshall Service arrives.