Okay, so it's 1 past 11 where I live and I've been rereading the property of hatred multiple times to try and look smart picking away symbolism that only exists because I am drastically overthinking things, so just humour me here, okay?
RGB obviously knows a lot of things that he hasn't told hero yet, right? But he does let quite a few things slip that I really like to hammer into some sort of reasonable theory.
Something I've honed in on is that when talking about what the trees are made out of, RGB mentions that in hero's language, someone would call stuff 'thoughts', but that's odd, RGB and most (apart from the creature RGB briefly tipped is hat to and even then he just didn't speak) of the characters met on the journey speak quite fluent... Whatever Hero speaks, well, apart from melody, but even then, she still speaks in musical terms, my point is that why are all the characters able to and always speak in their second language?
Another is that RGB, when getting hero back from that idea, says he owns her, if we assume it's taking place with some sort of mindscape, moulding to her own memories and experiences, the TV saying he owns her could make sense for a bored young child, the town certainly doesn't seem like the place for a child to be roaming, and the fact that there doesn't seem to be a dad (presumably, anyway, I just think this because she doesn't say goodbye to him either) in the house, it isn't mentioned if her mother works from home or not, so that can really be thought either way, but it seems it would come back to the fact that that kid must watch cartoons and such on that TV all the time, looking to it all the time for entertainment and excitement.
Also, remember how RBG tells hero that she didn't die because she wasn't afraid, but why wasn't she? Those things would be terrifying for me at her age, even now, to be perfectly honest, I also think them being in the garden of tears could represent how even places you thought safe are now just hunting grounds for panic attacks, sudden sharp pains of remembering a fear or horrifying memory, yet she is more curious of them than afraid, even going so far as to throw worms of doubt at them because they stabbed RGB, despite their appearance and how strong they evidently were.
Perhaps because she had fear for a very long time, perhaps because of a disappearance, perhaps because of a death of a treasured family member...
Someone talked about this before, how why there was a bunk bed when only one kid was there, adults don't buy one bunk bed for one kid, nor would a kid take the top bunk when the ladders hurt her feet.
Still, I don't know, it's late and I'm sleep deprived, Good night.