A female prison worker being questioned by police, who are hunting two escapees from an upstate New York prison, thought she had a romantic relationship with one of them and had planned to drive the getaway car, NBC News reported on Thursday.

In the end, Joyce Mitchell, an industrial training supervisor in the tailor shop of Clinton Correctional Facility in the town of Dannemora, got cold feet and checked herself into a hospital for nerves on Saturday, the day the inmates were discovered missing, NBC reported, citing unnamed senior government officials.

The older inmate, convicted killer Richard Matt, 48, who has a history of escape attempts, had wooed Mitchell for months and established a relationship in which she agreed to drive the getaway car, the report said.