Under The Graying Sea is a HARD SF novelette which appeared in Asimov’s Science Fiction Magazine in February, 2006. Here’s the teaser:
Tessa and her partner Loránd are on a maintenance mission: Enter a man-made wormhole. Fortuitously, the two pilots’ bodies have been reinforced to withstand up to 24 gravities each. But a malfunction causes life-threatening injuries to Loránd. Stranded over two light years from Earth and forced to wait for their return window, Tessa keeps herself busy by checking the wormhole anchor, only to discover that multiple and unexpected course adjustments have been made.
If you like the story, you can vote for it on Asimov’s 2006 survey which runs until February 1st 2007.