The walkthrough is outdated, the guy(?) working on it hasn't had the time to update it in quite some time and has only recently started work on an updated walkthrough for the latest version of the game, no ETA on it as of now but if I hear anything about it I'll be around. The latest walkthrough guide was for 0.18.4, attached to this post.
The bug with not being able to go into that woman's room, I think that's apart of the Ranger's Quest, is a known bug, though it seems to sporadically happen. I'd recommend trying to go in without having full energy to see if that makes any difference, otherwise you'll just have to wait until the developers release the next update to fix the bug.