I have thought about hiring someone in the future, but I have come to the conclusion that it is very difficult to integrate someone. Writing is a very personal thing, the same for "art", coding is very simple and intimately linked to writing. Where it would be easiest to hire someone would be as a translator.
I have a clear plan of where the game is going, and I even have a (tentative) ending written. I have written the epilogue, although it is not set in stone and could receive changes.
Those of us working on the game..:
* Me: Script, coding, "art", story, translation, player relations. Take it as a game made by one person.
* My wife: She reads the whole script in Spanish without knowing where the story is going. She is like another player, but she corrects things, especially about female mentality ("A woman wouldn't say that or would say it differently", "Samantha wouldn't wear that dress", "Erika must die a virgin, because she is my favorite and I don't want anyone to touch her"
).
* My stepson: First proofread of the English version and beta-test of all the routes.
* The daughter of a friend on whom Erika is loosely based: Second proofread of the English version and vocabulary corrections of the younger girls' expressions ("This looks like a 50-year-old guy wrote it. Young girls don't talk like that.")
Apart from that, I collaborate with some players who detect mistakes that neither my stepson nor "Erika" have detected, and a couple of native English players who are reviewing all the text from previous updates.
And last but not least,
RiamMar who, besides making his wonderful mod, helps me on a technical level with the programming, to make it more efficient and consistent. He also reviews the text, and as he is a poet in his heart, he suggests me expressions that are better than mine, and corrects typos or incorrect sentences.