Responses
This one? Not sure if there is any other copies of uploads since this one ended in s1 and im not sure what the current status is.
https://www.mangago.me/read-manga/i_m_a_villainess_can_i_die/
I only remember that MC is a girl who transmigrated in historical story.
Her previous life, she's unloved and used for her sick sister benefits. Which made her so depressed even in her new life.
There's a scene where she manipulate her guard/friend to leave her alone. That's when she secretly climb the tall tower and jump.