Resolved FL starts off in prison

I'm trying to remember a story where the FL starts off reincarnated in prison (not I met the ML in prison). She is in prison for something her sister did cause she always tried to help her sister. She is already married(or engaged) to the ML but has been very cold to him until reincarnating. Sis and family are trash. Thats all I remember.
Please help!

 

Are you sure it's a 'sister'? If not for that part, it sounds a lot like Angelic Lady
https://www.novelupdates.com/series/angelic-lady/

 

It was a sister. Or at least thats what it says in the beginning, may be half sister cause I think there were hints the FL was not really their daughter by how they treat her.
Its not Angelic Lady because I believe this was modern.

 

The Long-awaited Mr Han? I don't believe it started off with her in prison, but she did go to prison as her sister's substitute, her fiancé also went with her sister and all three of them died in a fire with only the MC reincarnating. She didn't reincarnate in prison though, just before that.

 

Not that one unfortunately. It definitely started in prison, or more accurately as she is being released, and her sis, parents and ML are there to pick her up. I think she also did something like give acupuncture to a mafia leader guy who was injured as she is leaving the prison

 

Hmm... feel like I've read this but I don't remember the title either...

 

Could it be this:
My Sweet Physician Wife Calls The Shots

 

OMG! Yes I think thats it! Thank you