In the beginning she starts off happy becuase she is turning her fears into trust and starting to bond, "turn your fears into trust, into trust" (LSD 4).
She now realizes that she also needs love in order to have that type of relationship but it leaves because its what she can't get.
The girl is chasing after the "love" because she desperately wants it and could really use it. The lyrics in the song are quite mournful so I would say that the mood is is sorrowful although the music isn't extremely gloomy it gives off an
She then realizes that she might experience heartbreak again (The demon of her life). She is afraid of trying a relationship from past experiences although its not as bad as it seems "But dont be afraid of these thunderclouds" (LSD 16).
The girl runs back to her house in tears and finds out that "Our house is burning when you're raisin' hell" (LSD 14) It shows how she ending potential love.
She then cries in her burnt house because she regrets "burning" down so many relationships without even starting them. The lyrics in the song are quite mournful so I would say that the mood is sorrowful although the music isn't extremely gloomy it gives off a desperate vibe.