Welcome to the forum family. I don’t have any experience with the YB gene but I’m sure some knowledgeable people will chime in. To me it looks like it, but take my guess with a grain of salt lol
What did you purchase the animal as and why do you have reason to suspect (or not) YB?
To my eye it looks like an Enchi Pastel YB, but without proper context I cannot guarantee anything
Very pretty girl! Congratulations on the nice clutch as well!