I still believe that a lot of the Real House Wives series are scripted. I also believe that now that Tamra knows Brianna is pregnant, she (Tamra) is going to get knocked up asap just so Brianna doesn't steal the spotlight with the baby thing.
Next season will be highlighted with Tamra and Eddies wedding and then Tamra will become pregnant. Not sure if Brianna will fall for the whole "let's show my pregnancy/birth of Vicki's grandchild" on Bravo but you never know.
I like Brianna and hope she doesn't become involved in this whole convoluted mess that is RHOC. But I still love to watch