Of course she wouldn't do anything. Seriously? They would just do an Anne/Tim Lawrence. Her at Amner, him at KP. Lots of frozen rictus smiling in front of the cameras. Anne and TL attend things together all the time, he joins everyone at Sandringham at Christmas. If the worst happened to W+K, outwardly absolutely nothing would or could be seen to change.
That said, I think it's HIGHLY unlikely.