Steady your Hand and Aim True.

Matoya mentions multiple times Y’stola was a spitfire that hissed and spat at everything. Which is so important to me bc she holds herself up like she is a queen (again good for her but it is just funny to know Y’stola is and always will be a brat)

and also the first time seeing Y'shtola in her natural habitat, Matoyas cave, was SUCH a fun experience to me. Especially since most of the game Y'shtola is such a mystery and you wonder what sort of upbringing she had, you would think she basically grew up in an academia setting...in a library (which is somewhat true but who would guess its the old hags forbidden library in a cave???)

And then you see her meet Matoya and you see her being rude and Matoya teasing her and telling you childhood secrets about her. And then you realise "oh this is where she grew up, this is the person she looks up to and disrespects both". And I love it so very much...

Also one other glimpse of her childhood is when she had to summon that lil water sprite thing in endwalker and did a little magical girl sequence for it. Makes me wonder if little Y'shtola was yearning for a princess-y like life maybe. Or if Matoya told her doing this is necessary so she can prank her a little bit but also make Y'shtola enjoy a little bit of her childhood properly. Idk but imagining little baby Y'shtola learning to summon a familiar with this cute lil dance while Matoya is giggling about it in the background just puts a smile on my face.