I think this is the one you're looking for: https://www.mangago.me/read-manga/the_way_that_knight_lives_as_a_lady/
OMG, you're right.
Thanks a lot!
But do you actually know if she goes for the silver haired ass?
SPOILER
What? No! The sub-ML was the one who killed her. It was her closest confidante in her army.
The ML is the green-haired duke who was her rival in her past life.
Ah, it's been so fucking long. I just remember getting spoiled that the guy who murdered her was going to be the endgame. The rest of the details might be fuzzy, but that was the reason I dropped it.
It's a FL reincarnation / transmigration story. I read it up to a certain point and dropped it when I realized who the ML was going to be. I wanted to add it to a list, but I can't seem to find it anymore.
The FL was once upon a time a "powerful female knight". I don't really buy into shit like that, but whatever floats your boat. It wasn't actually a bad story until someone told me who the endgame ML was, apparently. Anyway, she was killed by the knight of the political enemy her own lord had, which might have been the Emperor of the nation we were in, but the memory is too fuzzy for me to tell for sure. She had white or silver hair, as far as I remember.
After having been beheaded or something, she wakes up in the body of a troublesome noble girl from an enemy nation (I believe). Now she has black hair, btw. And the dude who killed her is apparently the male lead - meanwhile, sub ML is next to her as a knight and way better. I believe her name is either now Estelle or used to be Estelle. But I might be wrong there.
If someone knows the name of this, maybe they can also tell me if the ML was, in the end, not actually that bitch who killed her after.