It was two years since Buffy had sacrificed herself for her sister. At first Dawn had grieved inconsolably, and her friend Willow had worked herself into the ground trying to bring her back.

But all the attempts had failed.

With Dawn’s Mom dead, as well as her sister, Willow and her girlfriend Tara had moved into the house to act as surrogate parents and to look after the teen.

Gradually they had grown into a loving family. At times they still all missed Buffy, but with the passage of time the soul-destroying hurt of loss, had been replaced. And now the memories of her were nostalgic, rather than painful.

Dawn had grown up in the meantime and was now a beautiful seventeen years old, on the cusp of womanhood. Her looks, once childlike innocence, had become those of a sultry teenager, and her tits had expanded from the pancakes of a young teen to the fuller mounds of adulthood.

Suddenly Tara’s thoughts were interrupted as Willow snuck up behind her, enclosing her with her arms and gently lying her head on the blondes shoulder, "Whattya thinking?" she asked and then looked to where Tara had been gazing.

In the back yard a bikini clad Dawn was lounging on a seat, reading a book. The skimpy garment just about covered her choice bits, though if you looked hard you could see the brown of her nipple rings just peeking above the cotton.

Tara blushed, "I was just peeling the potatoes," she said.

Willow chuckled, "You, my love, are such a bad liar." She paused and took another look at Dawn, "Still I can see why you’re staring, Dawnie is certainly filling out. I wonder if she’s a virgin?"

Tara snorted, "I hope so."

"Why? She’s old enough. I had my first boyfriend at her age. And I was a slow starter."

"But she hasn’t got a boyfriend or anyone outside this house who cares for her," Tara replied, "It’s just for her first time it should be with people she loves."

"People? Not person?" Willow enquired smiling.

Tara blushed.

"Don’t worry, Tara," Willow continued "I’ve been thinking the same thing myself."

*

Dawn lay on her bed with a magazine. Willow and Tara had gone to bed earlier. Normally by now Dawn would have heard them crying in passion through her walls. She liked that; it made her feel safe and comfortable that her two friends were still very much in love. But all was silence.

Dawn hoped they hadn’t had an argument. They very seldom did, but they scared her. Each time they argued she worried it was like her Mom and Dad, and that they’d split up and she’d be left on her own again. Willow and Tara always made up, but there remained a nagging fear at the back of Dawn’s mind that one day they wouldn’t.

She looked at the magazine, but she couldn’t concentrate enough to read.

There was a knock at her door. "Come in," Dawn called.

In the doorway stood Tara. Her negligee was see-through and Dawn and beneath the gauze material Dawn could make out her erect nipples and her smooth snatch.

(Continue the story. Make the sex very explicit. Include rimjobs, foot worship, golden showers, pussy eating, tit sucking as the sex acts they teach her.).