I just used Yukari's name because I liked, I was looking for pics and couldn't quite find something with a regal appearance that I liked so was I like "meh, i'll use a picture of Yukari, that'll work" so it was entirely unintentional.
Yukarin just means 'Yukari-chan' but combined as a nickname, 'Yukatan' has a similar meaning, but I would yukari only allows certain people to call her that