But a state of "obedience" doesn't exist before marriage.
Yes, it does. If a woman truly loves a man, she will be obedient to his direction even before they get married, as long as his directions aren't sinful nor put her in positive danger. I don't see Blessed Mary being disobedient to St. Joseph's directions before they were married.
I could see a woman being reasonably suspicious of a man's motives and attitudes with regard to such a request: "What, is he making plans for bailing out on the marriage?" or "Does he not trust me?"
That's because you've been heavily indoctrinated with feminism. You can't see it. It's deep. You need to deprogram yourself.
I know my own wife and know that she would NEVER leave me without just cause (i.e., Catholic grounds for separation).
Oh, foolish one. You know nothing. The disciple Peter was MOST CERTAIN he would stand by Christ all the way through his apprehension, interrogation, beating & Crucifixion. Peter cowered despite his knowing, and he pretended to not be a follower of Christ in order to escape harm by the Jews.
Can someone take a turn unexpectedly? Sure, that can happen. But it's rare.

This is blatant dishonesty to add weight to your argument. Even if it were true (which it's not), your point actually fortifies my argument that women put on a facade before they're married, and once the marriage occurs, their true wicked nature is revealed. The evidence is in the high occurrence of divorce in these latter days, and the man being robbed of almost everything he owns. This is why a prenuptial agreement is necessary to protect the man.