We have a stalemate
Bella is being a loaf by the loungeroom window, and Lil is being a loaf near the loungechair. As soon as Bella moves I bet Lil will start growling again, but I think in a day or two she'll realise the futility of it all. Even Bella has started to ignore her carrying on, all Lil does is make a lot of nasty sounds, she doesn't attack Bella or anything.
Silly kitties.
Silly kitties.