Ah, I ended up being able to get it a few days ago! Me being the dummy I am, I was using the character related guides as a base since I started the game. (So for every character I started off with Sayuri's requirements and then branched off to the others' when the guide instructed me to. Instead I should've used the normal chapter walkthrough, in Sayuri's guide for chapter 6 it doesn't indicate that you need to use love + touch in a certain interaction for Kaede to get her ending requirements met, while it does say so in the general walkthrough. So the whole time, I wasn't even meeting her ending requirements! haha Thanks for replying even though it's been a long time since you've played and for all the tips!