Arielle is the name of a 10 year old girl who was interviewed on What's Your Favorite Word?, at which point her favorite word is "Cuddly".
Cuddly Arielle is thus a natural nickname for her.
She resembles Adventure Tessa so it's possible they are twins.
Interview for WYFW[]
My favorite word is "cuddly". I like that word because I like to cuddle my mom and my dog.