This sounds more like a knee-jerk pissed off tweet more than her actual retirement.Lexi Belle had some tweets that were kinda like this too,so I wouldn't be surprised if it's just that Sheena is really pissed off and Stagliano right now,and won't be working for him anymore.
Or at least that's what I REEEEALLY hope that's what's going on,because she's so fucking hot that I don't won't to see her go this soon.
Wow! John Stagliano must be an asshole for causing her to retire early. I hope she doesn't and just stay away from the guy or anyone else who doesn't treat her with respect on & off set.