Who is Jacqueline Coutier from The Neutronium Alchemist Conflict and what is their importance?

Jacqueline Coutier is a possessor. The Confederation Navy is holding her in custody. Coutier demands a trial, citing that she has specific rights that must be adhered to. At her trial, she subsequently attacks those in the courtroom and possesses more people. She later comes to realize that passing on information to Capone is more important than her freedom.