NEW : Prosecution faces ` ` a more complicated '' challenge , CNN 's Jeffery Toobin says . Police say Jodi Alexander was ` ` especially cruel '' when she killed Travis Alexander . That means she faces the possibility of the death penalty . `` This is the last decision the jury has to make , '' he said , `` and things have not been going well for ( Arias ) so far . '' A witness says that Travis Alexander screamed and suffered physical pain .
NEW : Prosecution faces ` ` a more complicated '' challenge , CNN 's Jeffery Toobin says . Police say Jodi Alexander was ` ` especially cruel '' when she killed Travis Alexander . That means she faces the possibility of the death penalty . A witness says that Travis Alexander screamed and suffered physical pain .