Dan stood there, indecision racking his brain. Kat backed up closer to him, clearly not knowing what to do either. Elizabeth carefully advanced on them, observant of signs of skitishness. Dan stood his ground. The cute daughter finally reached them and reached out to stroke Kat, who seemed the most nervous. She stood there, indecision etched in her face, as Elizabeth stroked the still womanly curves of Kat's brown-coated body. Noting that the mare (in her eyes) did not bolt, she started murmering encouragements. Kat finally seemed to calm down. She even seemed to enjoy being stroked. This had an immediate and unintentional effect on Dan. Aroused by the sight of the naked anthro-horse and the farmgirl, Dan's equine cock started to pound erect. Somewhat embarassed, he tried to turn his body away, but both Kat and Elizabeth saw it.
"Oh daddy, he really is a stud, don't you think? Such a fine animal for our farm."
"Yes Liz, he sure does look like a healthy stallion. This here mare isn't all bad either." as he stepped forward to put a halter over Kat's still mostly human head. Due to the magic, the halter adjusted to fit. Kat struggled, lifting her arms with hooves to try and get it off. The man struggled to subdue her, to no avail. Elizabeth quickly backed off, seeing a panic mare in front of her.
"I will not be treated like this! I am not an animal! What is this and what do they want! I can't get it off!" Kat was screaming. Dan didn't know what to do. His sister started crying.
Elizabeth advanced on Dan with another halter as her father worked to calm Kat down. Dan stood there, still somewhat embarrased about the huge exposed erection he had from both Liz and his sister. When Liz got to him, she started stoking his body much like Kat's. It was quite pleasant. He moved closer to Liz and bent down to smell her brown hair. Liz giggled and slipped the halter over Dan's head. Securing the leather rigging around his head, she glanced behind her at her father and the now depressed and resigned Kat, who was being led onto the horse trailer quietly moaning and crying.
"Oh yes you are a big handsome stallion." Liz murmured. Dan was distracted with thoughts of his sister when he felt a small hand squeeze his monsterous cock. He then felt it move around. This was too much, and he nearly doubled over from the erotic sensations running through his body. "Oh yeah, you like that, huh? Well, we need to get you loaded up there now." Still stroking his body, Liz led the still aroused Dan into the horse trailer.