BTW, I still need to double-check the Mishna in Kesuvos, but I’ll accept your interpretation of it. That being said, I did NOT intend to say the Mishna includes even when she’s an UNMARRIED ADULT. If I was mistakenly understood as such (regardless of fault), I apologize.
Regarding the metzius discussion (which is entirely different than what we’ve been talking about in Bereishis), I still don’t agree with you. Neither do I currently feel adequately prepared to defend my position on it at the moment, but perhaps I’ll have an opportunity to explain it better after some discussion with Rebbeim. It is a deep concept.