Who is Cherri Barnes from The Neutronium Alchemist Conflict and what is their importance?

Udat's crew member, Cherri Barnes, was aboard the blackhawk Mzu used to escape from Tranquillity. Mzu sabotaged the ship, ensuring that everyone onboard would die. In this book, Cherri leads Capone's men to Mzu. She then warns Sarha about the danger of the falling ironberg before leaving her body and re-entering the beyond.