The fact that Yaya dedicates a post to honor the women who raised Nadech is.... EVERYTHING..
Their relationship is deeper than I thought honestly..
Yaya won't be posting something unless she feels like she is in the mood or she thinks it's right
Other than work related posts, she would only post picts with her closest friends and family once in a while with full caution because she knows that every post will trigger public reaction and it's better for her to keep it herself.
Moreover, she respects her friends and family's privacy and Ya & Na know that their appearance in public outside work related events will draw too much attention and can unintentionally steal someone's thunder (like at kim's graduation party they will be standing on the opposite side).
So today shows that she is in the mood and she thinks the women who raised her beau to be the man of her world deserve a post just to honor them <3
Yaya does know how to keep her circle small yet very intimate and both Ya and Na would rarely give us a peek of their social activities beyond their professional work which makes moments like this so precious