The camp she facilitated murdered 60,000 people. Not a lawyer, but that strikes me as a capital crime.
As Cypress previously mentioned, an unarmed getaway driver can be prosecuted for murder if a bank robbery results in murder.
Consider the Insurrection. Who is really responsible for Ashli Babbitt's death? The police officer defending Congress or the people who organized and launched the attack?
IIRC, 5 people died that day as a result of the attack. Many have died since. How many years should the FBI be chasing down the participants, agitators and organizers? Two years? Five years? Ten years? To be clear; the Insurrection isn't close to being comparable to the mass murder of 11 million human beings in Nazi death camps. It's mentioned solely to point out about "statute of limitations".