Before getting into this I understand that in the transition from book to television the producers had to make changes from the books.
In the books Robb married Jeyne Westerling and eventually she conceived a child. Robb attended Edmure Tully's wedding and was brutally murdered, Jeyne didn't attend and was alive afterwards. Later in the series Jaime meets Jeyne and her mother and he askes if she's carrying Robb's child, she says she took care of it and presumably Jeyne had some moon tea.
Personally I think this would have been a great opportunity for Martin to throw in a twist to the readers, but I just don't know how he'd do it now. What I thought when I read it originally was that the mother made her daughter abort her baby, no. I thought that wasn't her daughter, Jaime has probably never met Jeyne before and no one (of importance to the situation) would be the wiser.
When they changed the character Jeyne Westerling to Talisa Maegry in the show, then killed her off I was wondering what would happen in the books. I know that they are two different things but they can't have something major like Jeyne actually being pregnant happen in the books but not the show.
I'm just curious what some other peoples views on this are, or if anyone has any ideas on how they're going to play it off.