I have seen lots of recommendations for good interfaith rabbis, but she is specifically searching for a rabbi that will marry a jewish groom and non-jewish bride [she is not religious, and does not want to convert].
There are tons of Rabbis out there who will perform interfaith ceremonies....a jewish groom to a non-jewish bride. Do a search on these boards and a bunch will come up - that's where I came up with the ones I called. I ended up going with Rabbi Alan Stein - I will FM you his info. LOVE him.