Hey again!
I'm not ENTIRELY sure on this one, but I'm ALMOST sure that the symbolism is "coveted" because "coveted" means extremely jealous of, and "winged seraphs of heaven" means angels, which means that the angels were really jealous of the love Annabel Lee and Edgar Allan Poe had, which is not really a holy emotion, which also might mean something bad may happen since the angels were jealous. SO, that means that this could symbolize something larger, like an event that was going to happen, so you could put "The symbolism is "coveted" because this could represent something bad is going to happen because the angels are jealous of the love Edgar and Annabel have, and jealousy is not a holy emotion for angles."
Have a terrificly amazing day!