She knew Legion as the new legendary undying who was instrumental to the downfall of Reinfield City. This is something she is sure about.
So she knew that this situation was the worst it could be and that Legion truly possessed both the pathway of undying and the pathway of killing at the legendary rank.
This makes the Legion very difficult to kill and also very dangerous to be around. That's, of course, if Legion can use the advantages of both pathways very well without running mad.
So she used that approach to try and dissuade him. She said, "There is no need to go so far just for some energy spring and a spring of life. We can talk about this."
"Let's talk about this. There are two of us and one of you. Even if you are formidable, you can't stop both of us from escaping. If one of us escapes, or worse, both of us escape, you will be risking your sanity for nothing."
