Part 1 was a little over 13k, and part 2 brought the total up to a little over 30k. I thought both part 2 and 3 were around 17k, but it seems that I was mistaken.
I am doing an editing pass through part 3 as I add expressions, but I don't think I've added 8k worth... I'm assuming something got lost in translation for me between the word count from Scrivener and Ren'py's word count.