Besides the fact there is no need for Kiera to have that massive guinea pig cage in her room, if she does have a cat (I think I’ve spotted a cat in the background of videos before) isn’t that quite dangerous. The cage has no doors or a top to it so a cat could easily climb/jump in and scare the little guinea pigs. We looked after a friend’s gerbils once and had to keep them locked in a room away from our cat to avoid any disasters. Then again Kiera never leaves her room so it’s unlikely anything would happen without her there to step in.
Also, her room is full of crap. She even says that a lot of her things are just trinkets she doesn’t do much with so why doesn’t she just get rid of it?
i’d say it’s part laziness, part because the rest of her house is hoarded and part because she’s still got a childlike mentality whereby she just has to keep all the crap because it’s ‘cute’.