Ghislaine Maxwell joined Theranos founder Elizabeth Holmes and celebrity housewife Jen Shah at a federal prison camp in Texas this week. The government hasn’t said why they transferred the convicted sex trafficker and confidante to Jeffrey Epstein from a low-security prison in Florida to a less restrictive minimum-security prison near Texas A & M University.

The prison is considered one of the top minimum security prisons to serve time in, according to prison consultancy group, for safety, comfort and amenities.

The former British socialite, 63, is one of the most powerful prisoners in American history. The transfer comes as Maxwell’s attorneys are pressing the U.S. Supreme Court to overturn her conviction while also seeking a pardon or commutation for her from President Donald Trump in exchange for her cooperation in the Epstein investigation and broader sex trafficking matters.

Maxwell spent two days last week talking to Deputy Attorney General Todd Blanche – Trump’s former personal defense lawyer – at a courthouse near the Tallahassee prison where she was serving a 20-year sentence for sex trafficking linked to Epstein.

Officials would only confirm that they had transferred Maxwell to the federal prison camp in Bryan, Texas, not why. Typically, prisoners are moved due to a change in supervisory or medical needs or as a security measure to keep an inmate safe, says Donald Murphy, a Bureau of Prisons spokesman.