User blog comment:Paul Nebeling/An observation and a question/@comment-27384850-20170202154638/@comment-3014077-20171211162145

I have a few reasons why I put forth that theory. Yes, Argo is an agility heavy build, but she HAS done boss scouting in the past. (Read Progressive.) In fact, her high agility makes her an ideal scout. That wouldn't explain why she would be scouting this particular boss though. My theory, and it is just a theory, is that Argo was covering for two of her friends that were enjoying their honeymoon. Argo was with Kirito and Asuna just before they got married, and while not explicity stated, Argo knew why they were there on the 22nd floor. Remember, she has known both of them for a long time and must surely know how they feel about each other. So, to me, it would be logical that Argo would pop up to the 75th floor as a sort of "wedding present" for her friends to let them relax and enjoy their honeymoon.

Yes, this theory is a little bit of a stretch. I will even admit that it's hard to see how the Skull Reaper could have managed to catch/kill a highly mobile target like Argo in just a few minutes. Argo was known to be alive on Kirito and Asuna's wedding day, but isn't seen after that. (Sorry, appearing in games doesn't count.) This is my guess why she hasn't been seen since. It's not the only possible explaination, and if you have one, I'd love to hear it. Unfortunately, until Kawahara comes up with an official answer to "What happened to Argo?" all we can do is speculate.