OK hers might be a little orangey. Check out my highlights album (pw in sig line): http://public.fotki.com/curlilocks/curlilocks_quest/
I think our complexions are similar, and I have had caramel and auburn-ish highlights. If you want more drama than mine, go a little lighter or chunkier. I did mine very thin. These are ones the salon did--too orange for me:
Nothing hotter than a chick with light color hair upstairs and dark downstairs.
You can try different colors here.