Do you know ... a dungeon where two sisters are in discussion with eachother ?
Hmm, that one doesn't ring a bell. I'll probably kick myself when you say it, but where is it?
Edit: oh, just remembered:
Do you know ... the password of the teleporter in Broken Valley, nearby the Chapel Scrine and their is another teleporter too ?
I only just discovered the other teleporter on this play-through! And I thought I'd been over every inch of Broken Valley.
I also only recently discovered I can jump higher if I do backflips, which aids some further mostly pointless climbing-based exploration. Sadly, still unable to find my way to that frustratingly inaccessible chest sitting in the archway on Sentinel Island!