1. They came from their mom's wo- um. 2. She fell into the cave where the Flesh was located (Stupid rocks) From Jimmy, she got infected in 3 ways. Inhaling the spores, bitten by a blood worm I believe it was called, and ate raw meat. Why did she eat it? Who knows (Consumption does not apply to Angel Sylly). 3. I Lwk just used Cured Sylly (Right) as a shenanigan skit. 4. The Fool (a partially canon character) reinfected her.