There was a joke in there somewhere. A really suggestive one. Mercy bit her lower lip lightly, but the grin spread across her lips anyway as she ducked her head slightly.
She could refrain. Really. She could.
"I think my knees can manage," she assured him. While her voice was slightly tinged with repressed amusement, she did manage the words without laughing.
Maybe she was at that point where she was so worn out that everything was funny and she was just a little loopy.
Since her hair was still up in the towel and not in the way, her motion to move it out of the way was abbreviated. Settling her hands on her lap, she shifted until she was comfortable. "All right then. Do your worst," she teased him as she bowed her head slightly forward.