I think some of the other comments are focusing too much on certain lines while missing the bigger picture. Here's what we can gather from the song: a 4 year old girl named Sheena Bella was killed in a cemetery while holding flowers and praying to God for bravery, and "they're gonna kill us all." Everything else is just elaborating on her dying young, or what the scene of her death looked like. That's all we know from the song, and I think it's deliberately being vague, creating an eerie atmosphere by not explaining exactly what's going on. If the title Seville refers to the Spanish city, then there are several historical battles and plagues that it could be referring to, or it could be something supernatural, maybe even apocalyptic. But trying to make too much sense out it might actually dilute the mood. The important thing is that Sheena Bella died in a cemetery, and we're next.
I think some of the other comments are focusing too much on certain lines while missing the bigger picture. Here's what we can gather from the song: a 4 year old girl named Sheena Bella was killed in a cemetery while holding flowers and praying to God for bravery, and "they're gonna kill us all." Everything else is just elaborating on her dying young, or what the scene of her death looked like. That's all we know from the song, and I think it's deliberately being vague, creating an eerie atmosphere by not explaining exactly what's going on. If the title Seville refers to the Spanish city, then there are several historical battles and plagues that it could be referring to, or it could be something supernatural, maybe even apocalyptic. But trying to make too much sense out it might actually dilute the mood. The important thing is that Sheena Bella died in a cemetery, and we're next.