Is there a patch for dialog?
There certainly is m'dude, here it is, in all its linky glory:
https://lewdpatcher.com/game/my-new-family
Don't know if u got an answer already or not, but I think I know the basics of it.
So bascially u need to create a new folder inside the games folder, where u then put the patch.
I believe this is how u do it. But it's been a while since I have done it, so I might misremember something or it might have changed.