... I can't believe people got this old work of mine... I can't believe I draw this. It was during my "I don't give a crap about gravity" phase... along with other bad things
I can't answer for Dan, but the image I downloaded from deviantART three years ago is named "050407_etna_y_flonne_again_by_dan_heron". The girl at right also has Etna's slit_pupils, pointy_ears and demon_tail. As for their wings, they may have been forgotten or simply omitted (like their feet).
When I was uploading the image, I went to http://danheron.deviantart.com/, found something entirely different and assumed that Dan had rebooted his account. This time I went to http://dan-heron.deviantart.com/ and quickly found the above. (Unfortunately, many things there seem to be watermarked to the Netherworld and back. Why can't we have good things, Dan?)