I appreciate the criticism though I'm afraid I don't understand the more specific points. Even in my testing right now, the dangle height doesn't depend on whether she's dangling from a rock or beetle. There shouldn't be a case where you have to attach her to a rock instead of a beetle to get the right height, and I'm not sure which puzzle you're referring to.
Anyway, the physics jank is really a product of writing my own physics system from nothing in a three day jam. It wasn't supposed to be this difficult to do the puzzles. ;^_^ It was supposed to be a lot easier to yoink the stuff off the floor too.