Dear Laurence,
thank you very much for reading my essay and for your comment, you touched a really important point.
This essay is and adapted excerpt from the first part of a longer text I'm still working on, where I try to manage the consequences of these starting point. To properly answer to your important question I should publish here much more from this text, but sadly it's still a draft in Italian. I hope I will have the chance to finish and traslate it, and to share it with the FQXi community as well, if interested.
Anyway, I will try to answer you through an example, to make things simpler.
Let's follow your case with a bouncing ball and the needed natural laws. As you said, we could consider more fundamental these laws, since the bouncing ball needs them to exists, and not vice versa.
Considering 3 bouncing balls the situation will be analogous, but considering all the physical object it would be not: laws and objects could be likewise fundamental. But in this hierarchy of fundamentality, it seems that relation itself it's still in the top, since without it there would be no laws nor object, but not vice versa, since we could still put in relation, for example, imaginary things (yes, we need a mind in order to do it, but it's not logically impossible).
To state it from another angle, bouncing balls, objects and laws are such just in relation with some (human) observer: but what they are related to something else? This is a question that we can't answer by definition, but it has sense anyway. Relations are so intertwined that even their hierarchy of fundamentality can change depending on the point of view from where we analyze it.
Thank you again for your comment, and good luck with your essay!
Francesco D'Isa