Well, unless Sarah is "forced" to be involved with the character eventually, and does not have the choice to dis-engage or ignore the character at whatever point Fable is cooking up, will it matter?
Mr Fable keeps saying we should be able to avoid interactions with any character we wish to avoid. Does that not apply at that point? Can the second meeting be innocent and inconsequential or not? Does that choice force us down a certain stream? Or steer us away from a certain possibility?