There have been a lot of rumors about Christina. Lots of folks coming on the boards claiming hey know her, that they are the stepmom (married to Jackson's father), babysat Jackson and all sort so stuff.I am very doubtful of any of this personally. With message boards anyone can come and claim they are anyone - and you can even have multiple ID's and then post in response to yourself looking like a second poster!
The rumors at this point:
1.) She had an affair with a cameraman who is married. She is now living with him after he got fired from his job due to the affair.
2.) Christina has been seen shopping with Karrine who she is working for... or a later rumor says she had a falling out with Karrine and left because she didn't like how Karrine treated Jackson.
3.) That there are two endings to SO - one with her graduating, one with her being busted.
4.) That at some point Jackson tested postively for meth.
5.) and the latest that I got in my email was that Jackson's stepmom is flying out to pick up Jackson because Christina doesn't have the time/finances to support him now.
Very interesting but if all of this is happening and the show runs 45 days behind real time, then in 45 days, Christina would have to have an affair with a cameraman, move out with said cameraman, get a job with Karrine, and quit the job with Karrine. If she was bounced from the SO show because of the affair it's a bit strange she is working for Karrine then who was introduced to her by SO.
Meanwhile from the promos I don't see any sign of Christina leaving - only that she may be pregnant (which has not been mentioned in any of these spoilers which I find strange).