The memory data of the YoRHa units can be uploaded into new bodies, when they die. In this case, the nurse 2B is probably a repurposed "dead body" (we know reactivating them is possible via gameplay and a specific quest)
I need more of A2. There's just not enough of her, either in-game or fan appreciation
Base +4, faytT +8, gert3613 +6, Syoshinsya +6, LKsud +6