I hope you realize the modder didn't added specifically speaking: ´´added slutty natalie's clothes to original incest sprite´´.
Like it's obvious the mod is only going to alter those specific character sprites for the Incest immersion. This is why IPATCHLITE keeps the current sprites but mostly affects the text to refer to them as familiars lol.
Unless boner team itself finish up this game and decides to add an standalone-side incest patch to add to THIS natalie a slutty clothing attire then that would be another deal
TL;DR This is all we get when using the mod.