Turns out it wasn't her entire fault why the whole kingdom fell and that A faction of the spy network from Sion's Kingdom has orchestrated the whole downfall and war.
http://www.mangago.zone/home/mangatopic/6212655/
Do you think you can be with someone who was either murdered by you or killed you in another life? Not another timeline but in a past life like hundreds of years ago.
"The Lady and The Beast" is a tale about a badass red haired FL who was ordered/forced by the ML for some melodramatic reasons to kill him and reincarnated ML is head over heels in love with MC with past memories. "I loved you but you betrayed me. I can't love you because I am still in love with your past self". Soap opera drama logic.
Let me see ... And it is also important that she doesn't end up with another shitbag!
As I already mentioned "Tearmoon Empire Story" (Obnoxious Perfect Prince)
Then there is "Iris - Lady With A Smartphone" (Former past Husband scum mamas boy)
"The Duchess With An Empty Soul" (Former fiance incompetent manchild idiot)
"Angelic Lady" (Childhood fiance was brainwashed by love potion still no excuse)
Peerless Alchemist (Spoiled corrupt spineless fiance)
The Bloody Merchant Empress and the Cold Husband's Forceful Doting (Covoluted but...)
Daisy - How to Become the Duke's Fiancée (Corrupted abusing Redhaired boyfriend)
I was Told to Relinquish My Fiance to My Little Sister, and the Greatest Dragon Took a Liking to Me and Unbelievably Took Over the Kingdom (Still about Second Chance)
The Lady's Butler (Second Male Gets gets the love he deserves by transmigrator MC)

I think the MC Mia is probably the first FL EVER who doesn't fall in love or end up with obnoxious perfect Prince Sion the one who ordered her death!!!
I don't get the recent trope in recent Korean Fantasy Novels/webtoons where the FL rewinds time or gets reborn for how many times and still gets swept away by the ML who for some dumb reasons gets curious about the MC he actually doesn't care in the new timeline.
My first manwah about Fl falling in love with her past killer was "Doctor Elise".
I get that the FL was evil and that the ML rightiously executed her for her sins but I don't understand is the logic that the two still have to end up together!!!
New reincarnated reformed Elise decided to let go of ML AND ML somehow gets suddenly interested in her because she shows unexpected new positives sides...
It is really stupid that despite her determination and past two lives experiences she still reduced to a delicate innocent maiden who can't help but love the perfect brooding ML/Executioner!!!
There are now other similar plots about loving your murderers with worse Mls.
The abandoned Empress; Lady to Queen; I Don’t Want to Be Loved; I Am a Duchess Who Has Rewound Nine Times, but My Tenth Life Seems to Be a Reward Mode, The Villainess Who Has Been Killed 108 Times etc...
My Recommendation:
There is a Chinese fantasy story about a no nonsense healer girl and the Mls who remember the first timeline and that they indirectly caused her death. To make amends they do anything they could to support the MC who is oblivious about their knowledge. And none of the Mls gets the MCs love ^^ It is someone else and better.
https://www.novelupdates.com/series/the-healer-demands-payment/
I really appreciate Mia and her cheeky attitude^^ Prince Sion is a big NO GO for her!