My opinion, based on my exhaustive (ha ha) experience with Bonnie is:
No strings - last time we had strings (Orca Bay) she told us to pull out our string bins, in the fabric requirements.
No cutting finished blocks. Bonnie would make us create all the little tiny pieces, rather than making big ones and cutting them down
That said, I've done 4 mysteries with Bonnie (Orca Bay, Easy Street, Celtic Sostice, and Grand Illusion) and this one does keep surprising me.