Christa Pike has been released from the hospital and is back in prison after surviving an execution attempt in Tennessee that left her unconscious and on a ventilator.

Pike is on death row for the premeditated torture and murder of a college classmate in 1995. The prisoner was set to be executed on Sept. 30, but the process went awry when she woke up following what was supposed to be two doses of a lethal injection. The botched execution sent Pike to a local hospital in Nashville, where she regained consciousness on Tuesday and began the process of walking again on Wednesday.