I didn't use any hints for the footprint puzzle but was happy to see it didn't throw me back to the beginning of the puzzle when I clicked on a wrong footstep.
I just finished the game. All in all, I liked it. I can't even say anything bad about the physics puzzle. It may be a good puzzle; just not my thing. Had I been in a different frame of mind, maybe I would have spent more time on it or maybe looked at the walkthrough to see the order of the items and then at least tried longer to solve the puzzle, while only having to deal with moving the items but not moving them AND trying to figure out the order.
The way Angelica talked and the head nodding probably wouldn't have fazed me except the way you (Marian) said "I hope you enjoy Angelica Weaver, oldbroad." made me start analyzing the game. The one thing I did not like though, was that they kept saying Cicero, Chicago. No! No! No! Cicero is a suburb of Chicago; it is not Chicago!!!