I think this is about a friend that committed suicide. It all makes sense, especially during the second verse where it goes, "The math doesn’t add up or match with the language of books that I’ve read or things that you said" like they didn't see the patterns. And that part that went "You were too small, I should have known not to leave you alone."
And if Lucie is Cacie's cat, I think it means that Lucie died too. Hence the "I have gone from four to one in the past 7 months and I can't afford to lose anymore."
I think this is about a friend that committed suicide. It all makes sense, especially during the second verse where it goes, "The math doesn’t add up or match with the language of books that I’ve read or things that you said" like they didn't see the patterns. And that part that went "You were too small, I should have known not to leave you alone." And if Lucie is Cacie's cat, I think it means that Lucie died too. Hence the "I have gone from four to one in the past 7 months and I can't afford to lose anymore."