Give Rosalia all the reasons to accessorize her and her tiny snakes. I do like the shield idea and being protective; even her snakes being more aggressive than her since she doesn't have much aggression herself.

Yeah, animals came to my mind first as Snow White (she is very Disney princess), and oooh, the gems are an idea. Same with her going Sailor Moon (or summoning Captain Planet lol). Though, what if something like Super Princess Peach with the dwarves and various emotions being powers themselves? But maybe not, it would be better for her to have something representative of them instead since the dwarves are other characters.

OH NO, NOT AVERSION TO APPLES! How would she make any apple treats for people? But ehe, either a weakness to sleeping spells, or an ability to detect poison...