You're welcome, I'm happy to respond!! I was actually thinking about your message since last night and today went in and poked around and made a few more small tweaks where I thought it might be helpful. For instance, a screen at the very start to inform people about the self-voicing option and how it can be turned on right away (in case anyone doesn't know about it), as well as better alt descriptions for what to do when the text choices pop up, just in case the keyboard doesn't automatically highlight them when they appear. Hopefully, some of these will make it even easier! (Though I will also continue to think about whether there's anything else I can do to improve it further.) I'm very happy if I can make the game as accessible as possible!
I'm sorry it's taken me so long to get back to this, but thank you very much for going the extra mile! It seems like you have things well in hand. :)
The only other thing I can think of to look out for are visual only puzzles (those where you need to see them to complete them) but aside from that you've covered everything I can imagine.
Great work!