It doesn't get very cold down there. I know it sounds weird. Here's what I'd recommend if she is to be standing outside waiting for the bus.

2 pairs wool blend longjohns. Hang them up to dry on a drying rack everyday.
Good parka, with hood, long in the back.
Hats. Get a couple.
A few pairs of merino wool socks.
Scarf.
Gloves.

That's really all there is to it. The drying rack extends the life of your wool gear by years. You don't have to wash stuff that often because the newer fabrics don't seem to really pick up dirt and odors.

I like to buy my stuff at REI outlet dot com, sierratradingpost, or backcountryoutlet. For fashion stuff she might like the Ibex and Icebreaker stuff, and the everpresent Smartwool brand.

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You don't need a weatherman to know which way the wind blows - Robert A. Zimmerman