It's generic and most of it make no sense...
The "original villainess" planed everythings, but instead of acting she took her own life?
The MC do everythings in three day... And author want us to believe that the original girl planed everythings to this point but never acted?
We see many people siding with her the moment she start her vangeance, but all of them never did anything to help the original girl? They all let her be abused to the point she took her own life... And we are supposed to think of these people as "good" people?
It's a mess... MC didn't put any effort for her revenge, she didn't do anything but physicaly attack a few people, because the original owner of the body already planed for everything.