Kirsten and the line

Josh was trying to show Kirsten that she had to stay behind the white line while cheering for bubba at his soccer game. Kirsten must of thought the line was going to do tricks or something because she bent down and just stared at the line. When she get caught up in cheering on bubba she pass over the white line again and Josh would tell her "Kirsten remember the white line" and she would be back staring at the line again. She still stares at the white line in games we take her to, all you have to do is say "line" and she starts staring.and it is not like we say Kirsten stare at the white line, all we would have to say is "Kirsten get behind the white line."