"Listen, most of the shells may be immune to her gaze...but the thing is that most also have to have something 'weird' happen to them, in your case becoming a cyborg, or someone else having to have some vaccine in them..
(Dude you already knew she was adopted she has a stepfamily lol-)
"What...what are you saying-"
???: "Your stepfather was making a prototype of a chip that-when implanted in a person's spine-would make them unable to be manipulated by the lunar gift. However...in Lunar's it would have a different effect-it would make them unable to use their gift at all. In order to test this prototype, he needed two people to test it on-one human, and one Lunar. I do not know if he ever found a human subject, but he did find a Lunar. In you....you are not a shell, Ms. Linh. In fact, I have reason to think your gift may be very powerful. But the chip in your spine ensures you cannot use it."
"...I.....h-how...."
She was left with even more questions, and no answers to them
???: "Ms. Linh, what I'm about to say may come as a shock. When I tampered with your chip before, it seems to have damaged it...your Lunar gift is returning."
"..........I'm.....becoming Lunar for real? L-Like with magic and....and everything?"
???: "It isn't magic, Ms. Linh, just science-"
"W-What does this mean!? W-What's going to happen to me!?"
???: "Nothing will change....your gift may appear unintentionally during times of extreme emotion.....and-if you wish, you can learn how to use it."
"N-NO! I don't want to be one of them-b-but doctor, I don't understand.....i-if I'm Lunar, a-and not a shell....then why was I brought to Earth in the first place...?
???: "The people who brought you to Earth and harbored you went to a lot of trouble to keep you safe, Ms. Linh. I have been looking for you for a long time...in fact, I started the cyborg draft because of it-"
"W-all those people...died because of me!?"
???: "I haven't killed a single one. All who have been tested have been sent home...I don't even inject them with the real vaccine."
".....doctor.....why have you been looking for me....."
???: "Ms. Linh...you are a miracle. You may yet save the world-but it is not for the reasons you think..."
At that moment, Cinder recieved a comm
Comm recieved from New Beijing District 29, Letumosis Quarantine. Linh Peony entered fourth stage of Letumosis at 17:24 on 18 Aug 126 T.E.
"....."
Cinder's legs shook, eyes going wide as she clasped a hand over her mouth
???: "Ms. Linh....?"
"M-My sister....-"
???: "Go."
He handed her the vaccine
"B-But..."
???: "Take it-save your sister. Just promise me....promise me you won't come back here until Queen Levana is gone."