The dynamics of the subjective appropriation of the changing body and the narcissicistic-identity reconfigurations at work in a suicidal adolescent girl actualize the vicissitudes of primary object relations on the scene of the individual somatic body as well as on that of the group body. On these scenes of the body, one can discern an attempt to reconstitute the equipment of power weakened by the profound transformations of puberty. But also, the search for a unifying double can be brought to light. The identification process is characterized here by the disjunction of imitation and introjection.