Brendan was about to do as his mistress ordered, but as he pulled on the trigger he sneezed at the vipress. "You sssstupid sssslave...." the vipress was cut off with a feeling from inside, something warm. The combination of the potion and Brendan's DNA has started a reaction. Brendan in fear of being the next meal pleaded "I'm sorry mistress, it was an accident" the vipress just looked at him "I..... I feel different" her voice seemed to lose more of the snakey lisp and sounding more clearer.
Just as Brendan was about to comment the vipress went into a mass of spasms. Fear took over Brendan and he backed away while the vipress began to change. Four nubs started to grow from her sides two on either side of her as she began to increase in size. Two by her tail grew faster than the ones closer to her head and were taking on a familiar form "Legs?" Brendan wondered. The other two nubs had developed into arms and the vipress began to look like a reptilian humanoid, she continued to grow until she had filled out to human prportions. The vipress regained her composure and moved her limbs, her arms looked human very slender and female but with scales, four fingers and thumb on each hand, her legs were the same very sexy and shapely with 5 toes on each human foot covered in scales.
The vipress managed to stand up, looked at Brendan "You have made me human sslave" her lisp was still there but only slightely. Brendan looked at what he had done, he had transformed the vipress from a snake to a snake with human legs and arms.