The Rainbow of Her Reasons
Sarah O'Connor's best friend and Nate's first love Fiona Lenore Kleinschmidt falls down a mountain on a hiking trip with Sarah, causing she and her friends to stay a few days at the Fishers' and giving Ruth a good excuse not to show up to George's apartment for a few days...until Maggie notes she's put nothing of hers in the place.
Not on the schedule right now. See Six Feet Under