A Trilogy means 3 - doesn't it?

Well, 'Holly' is finished - at least in the sense that the creative writing is done. Now comes the formatting and several runs of proof reading. Then maybe it'll be suitable to join 'Lisa' and 'Jody' to make up the last book of the trilogy.A little sad really, I never actually expected to get to the end. Might not be all over, though. Got an idea for a fourth book in the series. Hm. A four book trilogy. Now there's a thing! Still, as a friend of mine reminded me, remember the Star Wars 'trilogy'? The one that's now six films long, with a possible further three in the pipeline? There's hope for me yet perhaps.