Looking for fic

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I am looking for a crossover fic with Stargate SG1. I remember the main pairing is Jack/Buffy but there are some wormhole issues where different Angel's and maybe Buffy's come through and the main Buffy helps Angel get with a Buffy that doesn't have so much history with him. There is also a part where an alternate Jack and Buffy disappear and Angelus watches over their kids.