All she had to do was make it off the island before she fully changed into a donkey and the changes would stop. Something about the island was triggering these changes, and any intense emotions like fear or lust, would trigger further changes...
There was hope she might make it out of this at least partially human...
Rebecca sorted through the papers and notes on the table, hoping to find any other useful information. She was so caught up in reading that even her new donkey ears failed to notice the clop of hooves behind her until a heavy form crashed into her.
Rebecca fell to the floor heavily, landing painfully on her tail. The donkey like form of Claire attempted to mount her, Claire's stiff donkey cock dripped precum all over Rebecca's body and she barely managed to get a hold of herself. She kicked out and hit Claire in the balls, eliciting a bellow of pain and angry Hehaaws.
Claire scrambled to her hooves and ran out of the room, shutting and latching the door behind her. As she panted heavily she couldn't help but breath in the musky scent of Claire, and she could feel another change coming