Pushed to all fours by the male's weight, Thomas might have still been able to twist out and escape. But as she felt the hard prod of his rigid, dog-like cock against her rump, the former boy was too curious about what mating would be like. As a human, Thomas had only masturbated, never had sex with anyone. The bear part of her mind was already screaming to accept this fine mate, and the decision was easy despite knowing sex now might trap her for life.
Either Thomas instinctively shifted just the right way to allow penetration or the thrusting male got lucky, for the next moment she shuddered as the male pushed into her, driving deep with renewed lust. They both grunted and growled, pleasure and instincts taking control of Thomas' thoughts. The former boy was dimly aware of the glowing fae flitting around, and realized the purple male was dancing on her head again. He was both sharing and intensifying the sexual pleasure, building on Thomas' animal reproductive drive and identity. Did bears always mate this long and powerfully? Existence focused on the sex, building to a powerful climax that blanked out everything except the orgasm. Thomas and the male both bellowed into the night as jets of cum shot deeper into her body.
When the male was spent, he panted over he back a short time before drawing out, Thomas was dazed, not only by the sheer power of the sex, but by an intense sense of accomplishment - as if she had fulfilled a major purpose in life. She had never experienced such satisfaction as a human - there were no second thoughts, no worries or doubts. A primal need had been filled. More than that, Thomas had a purpose in life. She would bear cubs, continue her new species. The odd thing was, she could remember much of her life as a human, knew she had been changed. She was also dimly aware that this new life would be harder and shorter. Yet none of that bothered her. Thomas was a bear, and would live the life of a bear.
The male snorted and started to shuffle back deeper into the woods, away from the stink of humans. Thomas looked back towards the camp, then shuffled after the male. The further they got from the Scouts, the less Thomas thought of them, distracted by the softly glowing thing dancing on her head. She and the male were miles away by the time the purple fae joined the swarm of his kin to fly off into the night. The she-bear sensed no threat from the odd insects, and found a berry bush that she nibbled on contentedly. Her life as Thomas was not only forgotten, all thoughts and memories in her head were now those of a born animal.