Is there a Safari 5 download still on apple.com somewhere? My friend's mother-in-law upgraded to Safari 6 and is now panicking because she doesn't have separate address and search fields. Is there somewhere on apple.com where she can download a Safari 5 installer? She's still running Lion so that shouldn't be an issue.

Unfortunately, telling her to relax and get used to it isn't an option. It's like when my mother's Safari started defaulting to Top Sites and she nearly started crying.
Take a look at this question on Ask Different. How do you remove Safari 6 on Mac OS X 10.7.4

I had the same problem when I upgraded and was able to switch back following this answer.