Kaci Hickox, who told reporters on Wednesday night she would not be bullied, carried through on her promise to go out and about.
Police followed the couple but were unable to stop them without a court order signed by a judge.
"I really hope that we can work things out amicably and continue to negotiate," said 33-year-old Hickox, as she and her boyfriend rode on a dirt path in the small town of Fort Kent.
But Maine Governor Paul LePage said negotiations have broken down and he would exercise the "full extent" of his authority to protect the public.
By Ruchi Singh
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