I couldn't happily parse 14d but assumed it was relating to Franck which then explains the clash. Am I wrong? I have got another fairy tale character in my brain which is pushing me to N as the missing letter but fear I am wrong there too..
I assume when it says fifty entries it means letters. Do we have to rub out the rest of the puzzle? Or are we making a new puzzle? I can see a cold place which doesn't seem to have a place in the story, though I may have to read further. And the abbreviation is northwest in the grid but I haven't spotted it yet.