The fallen angel went back to heaven and picked her target. His name was John. He was one of the angels that barely made it to heaven and would be an easy first corruption for her to improve her skills.
"Hey, John!" She said in her angelic voice. He looked over to her surprised. "Can I see you for a second."
He followed her into a room where her trick would be concealed from the other angels, and God was very busy regulating the balance of the universe, so he wouldn't notice, just as he failed to notice the dark force taken over Jim's body. The arcangels, Michael and Gabriel, saw this but paid it no heed, the disquise which had been put on her was strong and even masked her soul from even the highest ranking angels.
"So why did you bring us here?" He said, turning back towards Jessica as he had walked past her when they entered. She jumped on him wrapping her legs around his waist, kissing him deeply forcing her tongue into his mouth.
Within a few moments John had been corrupted and they split up to find new angels to corrupt.