Ok... Platinum Jesus is the sim I created to do the #scenario. I moved them to Oasis Springs next to Johnny and they fell in love. Platinum convinced Johnny to adopt a baby and that's Sheena. Meanwhile, I tried adopting a ghost cat to see if that fulfilled the scenario requirement (it doesn't). Yasemin was the first sim killed by neighborhood stories so Platinum went and got her urn and bing bang boom scenario complete. They all moved in to Johnny's lot and built a big family home the end!