The One Who Killed Me In My Former Life Is Doting On Me!

I used to be an evil and treacherous daughter of the duke. I gained so many negative criticisms and hatred from a lot of people because of my evil acts and how I behave as a noble lady. One of my enemies send off an assassin in order to kill me. Unfortunately, I was stabbed by him and died. I thought that this is the end for me. However, after I opened my eyes again, I found myself lying in the bed and for some reason, my body is a bit smaller than how it used to be...? And then I realized that I traveled back to the time where I was fifteen years old young, before I became an evil lady! But I am now reflecting on my actions and I swear I won't commit some bad things again. Right now, I want to enjoy this second life and learn to study swordmanship! All things are going right according to my plan not until I receive a strange marriage proposal from a suspicious guy...I mean, from the man who killed my former evil self! And what more is, he was doting on me....?! What the heck is going on....?!