The Love of a Good Dryad II - Fertilisation. Love of a Good Dryad, #2

Steve loved to go hiking in the rainforest of Northern NSW. Then one day, following a previously unnoticed trail, he stumbled into a hidden clearing, to find he had arrived on the once-in-a-generation day when the few remaining female Dryads took human form. And thus he met Valerie, Valeriana to her sisters, who wished on that single day to be fertilised by human seed to try to produce a new generation of Dryads.
After plying him with their magical sap-like wine, they all proceeded to mate with him repeatedly. Except they had not expected Steve to teach them the wonders of orgasmic human sex. Sex that was so wonderful that Valerie chose to abandon the forest, to give up her magical Dryad life and become a mortal human. So that she could leave the forest with Steve and live forthwith as a human female, experiencing love and more orgasms.
Now, 9 months later and still not pregnant, they must return together and risk everything in an attempt to fertilise her, and her fellow Dryads.