She has been keyed up and ravenous since his return. She tucks in at meals, takes seconds — thirds even — of Mrs. Patmore's stews and pies. He watches her out of the corner of his eye when he thinks she isn't looking, pleased.
It's more than food she is hungry for. She hurries them home after the upstairs is put to bed, tugs his arm, fumbles the key in the door, is nearly naked when they reach the top of the stairs. She has done it enough times that he gently teases her. She laughs and means it. Doesn't tell him it's the only time she truly trusts he is real - when he's inside of her.
He unlocked her cell-door with his false confession, and now with his return, he unlocks all she has closed off, heart and body, wakes her from her long hibernation. She is beginning to believe that he is home safe.