Name 13/04/09(Tue)23:25 No.5944
...Does have exactly the sort of personality for that. THe first thing many girls do when they're going through an angsty phase or a moment where they decide to be toughter/ make important decisions for themselves is to get rid of the hair. It would presumably go right at the beginning, or, in descending order of probability, episodes 6 (End of the prologue arc, Futagoyama incident marked quite a significant shift as far as "her" attitude to the fighting business in concerned), 19 (mayor "Let's gets dangerous moment"), or 4. (Lets out frustration at reflection before storming off, severing the hair, later has Misato correct it in a typical cute mother-daughter bonding moment)
Yuri!Girl!Kaworu would probably be dead on with flowing, elegant long hair for, well, elegance, "classical" prettiness and confidence.