Check out sugarquill.net (under the same pen name) for a few stories that are good but weren't long enough to post here:
Winter Solstice
Fingerprints in Dust
A Healer's Touch by Rachael DuBois
Rated: 6th-7th Years [Reviews - 2]
Summary: Emmeline Vance died a martyr, and Snape was responsible.
Everybody's Fool by Rachael DuBois
Rated: 3rd-5th Years [Reviews - 8]
Summary: Snape reflects on the night he fled Hogwarts.
A Hint of Shadow by Rachael DuBois
Rated: 1st-2nd Years [Reviews - 2]
Summary: In the summer of 1981, two old friends find the chance to catch up. But something isn't quite right.
One Minute by Rachael DuBois
Rated: 1st-2nd Years [Reviews - 4]
Summary: Time is precious when fighting deadly curses. Missing moment from HBP with Snape and Katie Bell.