Is she coming back? I certainly don't think so. (With good evidence too.) [quote]What are your thoughts about the theory that she might inside the Composer or turned human by it?[/quote]If she was inside the Composer (which wouldn't make any sense) she'd still be dead because it was obliterated by the HAVOK nuke. The Composer can not turn her human or biological either. That is not how it works. The Composer only sublimates one way, nor can you sublimate a digital construct into a digital construct. As we see in Halo 4, the physical locomotive devices is not created by the Composer. If that were the case, when the Scientists of Ivanoff station were composed, they would have turned into Promethean Knights on the spot. A supplemental device is required to provide and create them. For the lore we have the Promethean factories that were present on Requiem, and present at the Composer's Forge. Same goes for organic bodies or forms of locomotion. And as the Librarian states, the attempts to return the essences to biological states created abominations. Not even the Forerunners could determine a way around this issue. Nor did they fully understand how the Composer even worked.