Yeah, I dealt with that back in the locker room: http://fb.countd.eu/cgi-bin/fbstorypage.pl?page=130211061044Cork&path;=nospamstory
When human-time comes, the old Sarah will be some combination of the people who have worn her which, to this point, includes Gladys Brewer and Coach Barry, both of whom were also changed by the process. There's still time to add in another person or two, though it might be interesting just to see a person who's an amalgam of those two and Sarah. Names and families will likely change, in any case.
If I had infinite time and infinite energy, I'd go back and make more branches where original Sarah is placed in other lockers, possibly even going into the boy's locker room, but as it is, I probably won't get much more writing in until Monday...