We don't know what her reasons might be. A lot of wrestlers have retired early because of nagging injuries or because they hated the travel schedule. You say it could be over jobbing, but jobbing does limit a person's ability to make money.
Sasha should be a star and pushed as a star and that means more money.. so it's not as simple to say it's over one match or whatever. But we are discussing a "report" and have no details so it's all speculation.
We don't even know she's quitting at all, you're right. My original post was in response to someone saying she shoulda quit after she lost the title to Charlotte at the Hell In A Cell... which would be a silly-ass reason.