by littlebro » Tue Jan 07, 2014 11:53 am
You need to complete this before going to Durlling Wood because Rendel has to visit his grandma the next day, and Durlling Wood is a week later. So talking to everyone again after you get back from the Wood isn't going to do anything.
I think in the original upload of the game there was a glitch on that bit of dialogue with Rendel, you could talk to him about his grandma between leaving the dormitory and Captain Jeneva joining. That's perhaps why you got the dialogue.
If, on the other hand, you haven't gone to the Wood and simply can't find granddad, he's sat on the bench near the notice board.