interference by retired runner

[shipwreck]

NFHS softball rules --- What do you do if a retired runner interferes with a fielder attempting a play on another runner? The rule book says "after being declared out or after scoring, a runner intentionally interferes with a defensive player's opportunity to make a play on another runner, the ball is dead and the runner closest to home shall be declared out."
I understand that but what do you do if it isn't intentional, if the girl just interferes with a fielder after she was put out, and the fielder couldn't make a play on another runner. Dave