EDIT = I can use the console to change the value to "TRUE" but it still registers as false when it comes to that path... as I said... someone else will need to help.
If you want to fix it yourself simply go to the file ep5_s5_meeting_dorothy_scene_proofe.rpy file, edit it with notepad++ and change "if dorothy_lust is True:" to "if dorothy_lust==1:" at the start or simply add in the variable $dorothy_lust=True before that point.