The last personal email I got said (and I don't know how reliable this source is) that Christina didn't like the way Karrine treated Jackson so she left the job. She has asked step mom to come to California to take Jackson back to this dad until she can get on her feet.What I find interesting is no one who has posted here, or emailed me privately, anything about Christina being pregnant and of course that is what she is saying on the current eps (which is about 45 days behind real time as they just did Sept. 11, and we are now Dec. 4).
So if Karrine and Christina are shopping together - and seen together - either she is working for Karrine while at the SO house (unlikely because Jackson is in CA) or Christina leaves the SO house in the next 30 days either by graduating or being booted off.
I was also emailed that the SO has filmed two endings - one where Christina graduates, one where she does not. It is undecided which ep they will use. This was emailed to me and I have doubts on it's truth --- but you never know.