That's an interesting plant for sure! It's new to me but as far as I can tell, it would be safe for Soju. They can get big but they grow very slowly and it may even like being on your desk.
The succulent you have now is a crassula and they are pretty tough although they do like morning sun.
Do you grow grass for Soju? You can get grass seed kits for cats or even grow wheat grass for her, which should reduce her urge to snack on your pot plants