Hey Dee Dee,
I think part of the problem is that the 200 F1.8 is a remarkably expensive lens, and Tess has a budget of only 800. The only alternative that I can think about, that exists is the 135 F2. The cost of the 135 F2 is about 1300, I believe, brand new.
Of course, Julie has been sharing photos with her 70-200 F2.0 equivalent that she got for Christmas...but that is an Oly lens....and it is quite pricey.
James