Vegeta's sister EDITING

What if vegeta had a sister but when vegeat whent to earth she was on planet turma to try and make them join freeza and after she killed them all because they refused she went back to base 23 only to find the her brother is going on another trip to try and gain immortality again and then she finds out that the evil space lizard was listening to her brother and nappa conversation and now she goes to namek to put a stop to the space lizard evil reign of terror.