South Austin, have your girl invest in a good rain jacket, with hood. Most of the rain up there is light enough, that you can just put on your jacket and go right out in it. If you go hiking or something like that, you might want rain pants, too. But for walking around campus, a good jacket is all you need.
I moved there in August 1998. My 2nd cousin had a houseboat on Lake Union. He and I were drinking beer on his roof, watching the sail planes land on the lake, and he told me to remember days like that in winter, when I wouldn't know whether to get out of bed or kill myself.
My first February up there it was partly sunny 1 day. Cloudy and rainy 27 days. That was a beating. But memories of last summer and anticipation of next summer kept me going.
After a while, you just accept the rain. You realize, it's Seattle, it's supposed to rain.
This is a popular poster available at Pike Place Market and those 'Made in Washington' stores: