As others have pointed out, if they just wanted her expert opinion on Tor they could have had the phone call or submitted the questions to her lawyer, which is

As others have pointed out, if they just wanted her expert opinion on Tor they could have had the phone call or submitted the questions to her lawyer, which is standard practice by the way. There is a huge whiff of shadiness about how the agents were behaving. Maybe they had a good reason and just wanted her help, but everything screams watch the fuck out or end up like Aaron Swartz.