Not Alone by @Patchwork_Cat (Patchwork Cat)

Poor Bubbles. Orphaned and homeless after losing her beloved ones to a terrible tragedy, she have to fend for herself in a cold and dreary city. But she is not alone, for she can often sense their love for her and knows they will always look after her and protect her no matter where she is. No, she is never alone.

Similiar (pre-sequel perhaps?) to my other PPG fanart, "The Three Ghosts". Yeah, I know it is kinda depressing. Oh well.