It starts fucking her

The victim, still incapable of complex thought, had enough instinct to know what was going to happen. She relaxed her throat and mouth and too spread her legs, ready for the inevitable. She felt it briefly press against her entrance, and with no resistance, it easily place the tip of its head inside her. She felt the gentle friction caused by its slithering into her. The thing didn't prod around, it knew its environment. The woman closed her eyes and relaxed herself, ready to receive the gift of sensation she had made the mistake of refusing before. It filled itself inside her as much as it could, slowly sliding inside her, driving the woman towards a sensual edge, before it sharply pulled back. The quick action of the vine partially retreating created enough friction to stimulate the **** areas inside her. She felt the foreign yet intimate thing re-enter, the rubbing as it slithered between her folds becoming a pleasure itself. The stimulations was such that her body was constantly creating dopamine, and so she she thought of every act and movement a pleasure to her. The vine regulated its pacing, each time matching the speed at which it entered with the speed of the exit. It no longer entered slow and it too did not exit fast, but both actions acting in a speed in between. The vine made sure to twist itself to maximize the area of it rubbing against her inside, and maximized the strength of its entering thrusts

What was once an intelligent and anxious girl was hanging in the air between trees like a decoration. She was unclothed, and her eyes were closed. She swung slightly forth and back, the result of the thing between her mouth and her rear and her lower front constantly thrusting in and out. Her face became redder as did her pussy, indicating that she was much too overstimulated by the unending pleasure. One could tell this was too much as her face and lower part was flushed deep red. It would be prudent to stop this immediately, as such stimulus became dangerous and risked damage to the brain, but there was no one to stop it, and the girl once known as Alison lacked the agency to do anything. The **** sensations caused her legs to twitch, at first slightly but now increased to a tremble. Her eyes began tearing up out of some confused reflex. The vine was practically playing her like an instrument, but in this case, played by someone who didn't know what they were doing. A reflex of gulping from Alison began, which the vine took as encouragement.

Summoning all the strength and energy it possessed, its pace slowed slightly, but the vine traveled with **** ****. Alison's body had ****, and was **** to stretch in the areas that it accommodated its forceful host. Her throat and her belly were a little thicker, and as a result, more of the intruder slipped in, finding refuge inside her. It might have been uncomfortable and even produce some pain, but the merciless fucking down under generated so much dopamine that she could not feel anything but the **** ****-like state of pleasure. Its as if her mind itself was getting fucked raw by the little chemical.