1. She is actually terrified shitless of Rudeus, because of how powerful he is. She tried to find out if all the stories of him were "stories" because some of them were utter nonsense and impossible, but the more she investigated, she actually found out its all fact which made her scared of him shitless.
Later rudy one shots Badi, the Demon King in a friendly competition, which makes Ariel make a mental note, DO NOT PISS OFF RUDY PERIOD.
2. The first time she met Orstrid she wet herself. Yes she literally pissed all over herself, and could not utter a word, and Rudy was left to clean her underwear.
