I'm personally madder about the ultra cheating than I am about the guinness thing, basically b/c I don't pay much attention to those weird records (e.e PR Stunts as they were aptly described in an earlier post).
That said, if she is making money off being a guinness record holder it seems logical to alert them to this.
If their criteria is impartial observers, certified course, etc, I think its worth alerting them that she probably doesn't meet that criteria in a fair number of races.
Does someone (fife did a good job earlier) have the patience/writing ability to summarize this so we can write to guinness? or that tv channel concerned san antonian was talking about? on a slow news day, it might be fun to send a tv crew over there to watch one of the 5 person races/ultras.