Marigold was injured during the explosion. She had some severe damage to her body due to her being near the explosion of one of the bombs, but she was not in a bad situation that would warrant her death. She can survive, but she will need to stay in bed to recover for quite a while. Elaina's grandmother will help with her healing session to ensure she gets back up as soon as possible but even with her help, it might take some time for her to fully recover due to her getting caught in the blast the closest. It was even a miracle that she didn't suffer any missing limbs in the process considering that it can even cause someone to be destroyed to pieces if they are not careful.