Found 327 thou shalt not die manga Stories

After learning the hard truth of how her twin sister Dalilah brainwashed and manipulated her mind during thirteen years, turning her into a ruthless assassin who killed hundreds of innocents including her youngest brother and best friend Valerian, twenty-seven-year-old Princess Natasha Nicholai, is executed in front of the Imperial Palace.
Somehow, she gets sent back to the past right before Dalilah started putting her evil string on her mind, to when she was about to turn fourteen, and uses tha...

When Travis, Serena's mate, picked her sister over her, she couldn't help but think her fear had come true.
She was denied by her mate.
Choosing the easy way out of the heartbreak, she ran away with no intention of going back. But, it wasn't that easy when her older brother managed to track her down and demanded for her to come home.
And when she does, secrets will pop out and she will find herself in a situation that she never thought would end up in.