As long as you don’t impregnate her

You want it. She wants it. So as long as the sex you have with her doesn’t result in a bastard you’ll be able to screw her without feeling bad about it afterward.

You grab Doe by her shoulders and turn her away from you. You then push her over a table standing not too far from you. In fact it is the same table you placed her on to transform her into the fox girl she is today. The first time you put her on this table as a human and took her off as a foxgirl. Now you’re placing her over it as a girl and intent to let her off again after you turned her into a woman.

When Doe gets to the table, she practically lays herself on it for you. She even arches her back to present her butt to you. You grab her skirt and pull it up, just like you imagined earlier. Doe automatically raises both her tail, giving you greater access to her hind quarters. Then you press your dick against her butt crack and start sliding it up and down. Your hands go to either side of her butt and push her cheeks together. Trapping your dick between her soft flesh while you slide your dick up and down. If Doe didn’t want you to do this to her, you would stop. But she lets you do as you please and even starts moaning. So you continue.

Suddenly you hear Doe say, “John, I want you. So please, take me. I am yours.”
With that, you line your dick up to her pussy and slide it inside her virgin hole. You break through her hymen, transforming her on this table again, and start fucking her.
Upon entering her the both of you moan. You pull out of her until only the head is still in her and when you push back in Doe pushes her hips to yours. She is fucking you just as much as you are fucking her.
“You know, this is not appropriate student-teacher behavior.” You decide to tell her.
“I don’t care.” Doe says. “I like this. I want this. I … I love you, John. I love you … teacher. So please, teacher. Fuck your student. Teach your apprentice the pleasures of sex. You can do anything you want.”
You lean forward while sliding your hands across your apprentice’s lithe frame. Your hands stop only when they reach her breasts. There you grope both her handfuls while pushing your dick all the way inside her. She throws her head back while moaning, pushing one of her fox ears against your face. You sniff her scent and start fucking her faster.
“Oh, yes. Yes teacher. Fuck me.” Doe moans.

When you feel yourself getting close you pull back and grab both of her tails. You pull slightly on the hairy appendages growing from above your butt, eliciting new cries of pleasure from her. Suddenly you notice a new smaller tail between the two tails she already has.
“Uhm, Doe?” You say. “You have a third tail.”
“Excuse me??” Doe asks.
You let go of one of her fully grawn tails and slightly pull the small third one.
“Oh my god.” Doe says in shock. “When did that get there?”
“Let’s find that out later.” You say. “Let’s finish this first.”
“Good idea.” Doe says. “I’m so close. Are you too, teacher?”
“I am.” You reply. “It won’t be long now and I’ll be cumming all over you.”
“Mmmh, yes.” Doe says. “Cum with me, teacher. Let’s cum together.”

After a couple more strokes, Doe pushes her butt all the way against your hips and keeps it there. She moans long and loud and you feel her pussy contract around your dick. This way she pushes you beyond the point of no return. You quickly pull your dick out of her and hold it above her butt. Sperm starts spraying from your dick almost immediately. It flies between her tails and lands and her back. By the time you are done she her orgasm has also ended. The two of you are so tired, you both decide to go to bed early. Only this time, instead of having Doe sleep in her bed, you invite her into yours.