I am not a full fledged dev yet, I am learning a bit here and there, mostly just writing scripts and letting someone with a ton of coding and rendering take care of the the technical parts but I might have a tip to make fixing these kinds of errors easier, don't use the whole name in either the dialogue nametag or in the actual dialogue bracketed name insert tag. For like Libby(Alanna in my playthrough) a line of code might look like this...
LI "Hi, nice to see you again [mc], you may not remember me me but I am [li], [vi]'s daughter."
Then you could do a case sensitive Find/Replace like "Find Libby, Replace [li]" and not have to hit next 300 times. Then again, you may have a more sophisticated editor to edit the code. I just use notepad++
Like the way it was currently coded, that above line, with the default name error would look like this...
Libby "Hi, nice to see you again [mc], you may not remember me me but I am Libby, [vi]'s daughter."
The Find/Replace would catch every one of those nametags when searching for the accidental default names in the dialogue. Since she has several hundred lines, it makes it so tedious.