Rachel is a 35 year old school teacher who has no man in her life and lives with her mother.
Each element give off a particular color when heated in a flame. (Some are colorless). Copper gives off a green flame but to do that there must be some copper compound IN the flame. (there are many other elements that also could be causing a green flame).
Wrong Explanation 1: Chemistry. People who know just enough chemistry to be dangerous are aware that burning copper gives off green flames, and they claim that any green flames are due to copper. I've even seen claims that the blue of a gas flame is due to the copper tubing used in the burner.