Viviane again. We're so sorry to hear about what happened with Sender and Knatz. Your story was frightening, to say the least. We do have some good news for you, though...we think we might have cracked the fragment!
Last we talked, we had mentioned that some of us followed the rhyme and split the timeline strip into two interlocked loops by cutting down the middle. We went back over every piece of info we had and decided the best thing to try would be using the arrows on the clock faces to point at certain letters on the outside strips. We went back and forth all day, trying different methods and combos for solving the Time Donut - Robert's name for it, which stuck. Finally, a couple of us who had cut the center circle out of the clock face tried linking the faces together and found that, when you linked the clock faces together like chain links and matched the paired words, the arrows suddenly pointed to the letter outside the paired word. So, when you put "Acorn" and "Oak" together, the 1 arrow points to the letter outside "Oak", not at "Acorn."
I tried every position where the clock faces could fit and wrote the indicated letters in order 1-10, and we think we have something that might work: "INLAUDETUS."
There's a bit of a catch, though: we don't seem to have access to the Book of Briars. Since we didn't get an email from it either, the circumstances lead us to think that, although we can help with the puzzles, your group has to be the one to unlock the Book. I can't explain why, but...trust the flow of magic, right? Anyway, we're pretty sure about this. Just, try it on the Book and see what happens?"