Behind them stands doÃ a Marcela de Ulloa ( 6 ) , the princess 's chaperone , dressed in mourning and talking to a bodyguard ( or guardadamas ) ( 7 ) . Behind them stands doÃ a Marcela de Ulloa ( 6 ) , the princess 's chaperone , dressed in mourning and talking to an unidentified bodyguard ( or guardadamas ) ( 7 ) .