The tenderness was all Marian desperately wanted. It didn't matter that it was coming from someone who she considered her mortal enemy, because she had just seen how much worse it could have been. The sheriff was keeping her captive, but he'd never sought to hurt her. He'd never made her crawl on the floor like a dog. He'd never forced her to repeat that no one was coming to save her, that no one cared about her, that she was a burden.
The Sheriff had saved her from a existence of torture and endless pain and constant degradation and Marian didn't even know how to start being grateful for that.
So she let him kiss her head and then she leaned into him, resting her cheek against his chest with exhaustion. She just needed a human connection. She just needed to be reminded that there was more in this world than agony.