I Actually Became the Heroine's Little Follower

Su Mengyao hated Lin Wan to death. She was the one who made her lose face. She wanted to kill her, but why did she become her follower later? No, she was not a follower. She was just secretly learning her skills, so she was not a follower. But why was she different? She was different from everyone she knew. (Dual heroines, one heroine is a vicious female supporting character, there is no rebirth, no time travel, no barrage, the vicious female supporting character awakens completely on her own)