Seventy Years in the Book: the Female Supporting Character Who Refuses to Be Robbed of Her Luck

Song Rui was a hard-working social worker. After working intense overtime, she finally couldn't stand it anymore and fell asleep on the way home. When she woke up, she appeared in a strange era. After waking up, she spent two hours figuring out where she was. It turned out that she had traveled through the book to a period novel she had read. The protagonist is a "little princess" who has a system and uses the system's reminders to suck up the luck of her "cousin" step by step. Song Rui originally thought that she was a passerby, but she didn't expect that she was the "cousin" who had her luck sucked away! How can this work? There is a system, right? So what, I've read the book and have a God's perspective! Don't even think about grabbing any space or opportunity! Also, why does this "capital nobleman" whom I met, who is full of evil and kills without batting an eye, appear in my life frequently? Did he want to kill himself? But the person she likes can only be her dog! You guys have CP! There is cp!