Great Job!!
One little detail, I could'nt use the converter because can't support some latin caracter, (for example: ó)
Viewing post in Twine to Ren'Py Tool comments
Wow! This is a really clever workaround. What I might try to do is add these characters to the hidden replace terms (which are used for the Twine to Ren'Py conversion in the first place). It's been a second since I've sat down at my computer with this script though, but it'll be slated into whenever I can manage an update for sure.