Sarah was laying motionless on the ground of the lake. Slowly she opened her eyes not knowing what exactly had happened. Even with her improved sight, she barley could see the surface of the lake. As her vision got clearer she noticed that the barrel was laying with its open ending on her chest. All the blue goo were spitted on her bare skin and on the ground next to her. This time it did not look like her skin was absorbing the stuff, but that the goo was moving by its own... directly to her open womanhood. Sarah started to panic as she realized what was going on. The first touch of the substance must have increased her strength hundredfold but as she tried to move she pitifully failed. She only bubbled as she screamed and pushed with all her force. But it was useless. Some very strong force was pinning her down on the ground.
As the goo further moved to her pussy Sarah struggled but finally failed as the the tip of the goo was touching her clit. Immediately, she was send to the stars and back as the most powerful orgasm hit her with full force. Her strength again multiplied. The goo continued its penetration into the womanhood of the supergirl. Lost in sexual ecstasy Sarah felt pain for the first time since first changes as more and more of the goo were filling out her pussy. She could not take anymore inside her but it continued to push itself deeper and deeper into Sarah. Only her already increased super strength protected her from being ripped apart by the super dense goo inside her privates. Every second her strength level increased thousandfold as the goo were absorbed by the mucous membranes of her pussy. Even the goo which was laying next to her found the way inside her. Sarah pussy contained the content of whole barrel. Still experiencing orgasm after orgasm Sarah ascended from being an invincible supergirl to a God like being.
As her power shoot up to unimaginable degrees her body also started to change. Her eyes started to glow in the same bright dark blue shade of the goo and were illuminating the water around her. Her legs lengthened until she reached about 6'2". Her hair grew as it was flowing in the water. She was the ultimate being radiating with beauty and shear power.