I can help. The keyword is taken from the decrypted message just above this letter string on p. 37. But the "ABCD" portion is the regular alphabet. It helped me immensely to write it out by hand and not use a cipher site. If you write it out, you will see why Jenny very cleverly used "ABCD". I hope this is helpful.
Nica, I have MOST of the mini-puzzles solved. The ones I am having trouble with, I am trying to use this message board for some help. Are there any that you need help with? I have been holding my cards close to my chest with regards to the chess pieces. I'm glad someone else got them. Yes, I get what you have (except I have two additional letters at the beginning): FA ENJOY THE DAY EA SECRET A "Nothing leads to more" - I have to think about your thoughts on this. There are quite a few mini-puzzles that have 'errors'. At least, that is what I have been calling them. Perhaps, as you are suggesting, those 'errors' are used for the FF coded words... A very nice thought that you had. Thanks for your help.
tinaj, Thanks for you input. I haven't figured this one out yet, but I do have the previous mini-puzzle and know the codeword for that one. I noticed there were letters in the coded string that weren't in the previous mini-puzzle, and just quickly dismissed the the previous codeword working. When I have more time, I'll look into solving it. (I remember the previous mini-puzzle took some time - as there are a lot of 'options'.) Thanks again for your help.
Pop, You are welcome and let me know if I explained things badly.
Speaking only for myself, I never considered the "F" and "A" chess pieces from page iii (the dedication page) and page xiii (Title Page?) to be included in the message (Enjoy....). Of course, I could be wrong. I assumed the chess pieces on page iii were just a decoration that represented Jenny and her family. I assumed the chess piece on page xiii just to be decoration, as it's on a page numbered in small Roman Numerals rather than Arabic numbers of the rest of Jenny's book. Again, I am speaking only for myself, and I could be headed for trouble. LOL