The most annoying Lana-Luna mixup was at least fixed with v0.3, the rest of the old mistakes unfortunately not.
I've created a very simple FixMod that can be easily expanded with whatever typo you find, even for any other renpy game too if you modify it by any texteditor.
Drop the attached file into the game's game folder, and that's it for any future version.
You can check out what's fixed so far by left-clicking the attachment below.
This can't magically fix any future mistakes but at least is very easy maintenance, so I'll add any further fixes I find.
Even if the author will fix some mistakes, this fixmod won't do any harm if it still includes those fixes itself, so 100% compatible as long as no "Ethan" or "Sophie" character is actually introduced. In this case, I'm going to modify the replacements asap.
If you still find more typos, give a damn and I'll add them. Not every typo must be fixed but something like sister-brother mixups is unnecessarily ruining the otherwise well enough writing.
I'm still only capable to fix the dialogue text errors without replacing whole original files or chapter labels, but this should do for now.
E.g. when you pick "Charm" near the end of v3, Dandara's name will be replaced again by ??? once but changed again with her next line. Same for the too short pauses between the phone text message images.
That's not really worth to replace the whole chapter label there as I don't know any other way yet to replace only a single code line. I'm still a learner of renpy.
FixMod created for version: 0.3