Given that Greenbaum's defamation claim is crap, I would think that under the relevant jurisdiction (NY?), the judge would grant a motion to quash a subpoena for people's identities. (Her affidavit, purporting to support the validity of her defamation claims, suggests this (reasonable validity) to be a requirement.)   Unless orthomom is otherwise identifiable (she probably is) I think only google will have to pay any money to defend this. The judge will explain to Feder that crap is crap, so no one will go after orthomom even if she is outed.