Your typical tall and willowy elf, graceful and lithe standing around five feet five inches.  Dark hair that was usually left to fall past her back loose, and large expressive eyes framed with dark lashes.  There wasn't a lot that marked her as different from any other hauntingly beautiful elf everyone was so damned tired of... and the cliche gets worse when you note two small horns atop her head, and just barely longer incisors than normal.  

Isil's mixed blood showed up more in her personality however, being rather well... insane at some moments.  Seen decorating herself in jewlery and shiney objects, most usually stolen off others, to carrying around a pet rock or setting land mines around her seating area with jacks and toothpicks.