Move to her and help her relieve herself?

Christopher got up a little shakily and moved over to T'Pol. T'Pol watched him approach with a raised eyebrow. He sat down in front of her.

"What are you doing?" she asked.

"Just relax," he said and reached out a hand to cup her breast. She didn't pull away, but she again asked him what he was doing. "I'm going to help you like you helped me."

He started to pull her undertop up, wanting to expose her breasts, when she suddenly had him on his back and was on top of him. She had moved so fast, and was so strong that Christopher was helpless. She straddled him and looked down into his face. Her eyes had become a little frightening in their animalism.

"T'Pol?" he said nervously.

She ground her crotch onto Christopher's hard cock.

"You want to help me?!" she said menacingly. She reached down and took his cock out of his shorts. Then she slid her undershorts aside and Christopher moaned as she guided him into her. T'Pol held his arms down above his head, pinned to the ground and she rode him hard and fast. She was grunting and moaning as she slammed her ass up and down onto him, taking his cock deep into her pussy.

She was being very rough, and Christopher was on the point of becoming afraid when he came hard and deep inside her pussy. T'Pol yelled and arched her back and raised her face to the ceiling of the tent as he came in her and her whole body shook as she came hard on him.

After very lengthy orgasms, T'Pol pulled herself off Christopher and ran out of the tent.

It took a while for him to recover, but when he did he went outside and found T'Pol cooling off in the waters. She would not talk to him for some time. When at last she came into the tent, she was very cool and distant, even more than normal.

For the next few days, she asked Christopher to masturbate on his own outside, while she took care of her own urges. Eventually she discovered a mixture that would stave off the fever enough that they could remain in control. The Enterprise rescued them a few days later, and they were briefed by the Captain, who agreed the mission should remain secret.

T'Pol never talked to Christopher much after that except when absolutely necessary.