Daisy can see that Lucien is genuinely concerned for her and that expression of him is somewhat refreshing because she is used to her husband seeing her as the most powerful person in the world and therefore believes that she can overcome anything.
However, she is not invulnerable. She is a sick woman who fears she will not live long, and all she wants is to be loved and protected as Lucien loves and protects his wives.
She nods while looking at Lucien. "Yes, my Blood Nascent is ruined, and I can't even predict how long I can stay alive using alchemy."
Lucien approaches Daisy and rests his hand on her shoulder. "Don't worry; I believe Sophia can help you. Her healing skills are excellent, and her life mana is incredible."