I thought I'd recommend Primal Sympathy by Lydia Bower. It's a great little AU fic which takes place just after the events of Gethsemane, there's enough angst to keep *even me* happy, and it's a decent length to get your teeth into.

The original site link is broken, but I managed to find it in three parts on Gossamer
http://fluky.gossamer.org/cgi-bin/read.cgi?or/PrimalSympathy1.Bower
http://fluky.gossamer.org/cgi-bin/read.cgi?or/PrimalSympathy2.Bower
http://fluky.gossamer.org/cgi-bin/read.cgi?or/PrimalSympathy3.Bower

There's some interesting characterisation, which I'm sure not everyone will agree with, but that should be good for discussion!