Thanks for your reply, I figured this would be the answer, but I just feel so distraught I want answers. She'll be dropped off at the vet for necropsy in the morning ☹️
I had a female Jacksons Chameleon, not exact on the age as she was adult size when I got her two months ago. She had multiple vines and artificial plants (the live ones are currently on order, due to arrive next week ☹️). She had the appropriate lighting, temperature, humidity, food, water...
This string of mucus poop (?) was hanging down from the vine. It's from a presumed female Jackson Chameleon (no horns). Do I need to be worried? If it's not poop, what is it?