Honoring the Warrior's Code

Two girls are fighting each other, the first girl is armed with a spear while the second girl is armed with a sword. After 3 hours of fighting, both girls look exhausted and sweaty. The first girl with a spear suggested that they just kill each other rather than continue fighting to the death. The second girl agreed on the condition that she gets to stab her first. The first girl was okay with that so the second girl stabbed her in navel with her sword. The first girl then stabbed the second girl in the navel with her spear. The first girl then suggested to the other girl to lie down on her back, promising her that she will commit suicide after the second girl is dead. When the second girl is on her back, the first girl twirled the spear around, shredding the second girl's guts and making her vomit blood.

After the second girl was dead, will the first girl honor the Warrior's Code by killing herself as agreed beforehand?