Hi
Tracey.
I'm a young adult, being 17 soon.
And I've got sick at the age of 14.
I don't only have Sjogren but my first diagnosis is Lupus.
I may be a bit older than your child but pretty much the same age.

I'm glad they atleast managed to diagnose that quickly, before any other symptoms would show up-
Such as dry eyes, mouth, jointpain-inflammations, etc.
Or before any other manifestations would show up.
I see that people here already have given great advice.
You can always send me a pm if you have any questions.

It's always good to seek a second opinion if you feel that your current Rheumy isn't really helpful or may not be sure what he's dealing with.
It's your child after all, she deserves the best health care and treatment.
But it's good that they atleast put her on Plaquenil and steroids already.