Maybe she wasn't present all the time.
"Brenda"
"Phil gave his son a sign and pushed the boy in front of him. Some young democrats tried to cover Phil's sign with their own. The boy dropped the sign and a worker grabbed at it. Phil then shoved the kid. When Phil's sign was covered up he placed his young daughter on his shoulders and gave her the sign."
"They did not take the sign from the child's hands...he dropped it. PHIL took the sign from his daughter himself."
"Again, TT, I will say that Parlock himself took the sign from his daughter. No one grabbed it from her hands. The sign was so badly worn between having been hidden wherever it was on his body and the mist that it fell apart."
"They simply held signs in front of her and Phil took his Bush/Cheney sign back."
In the same thread, "The Great Society" writes:
"After he got in the event and pulled out the sign he was not supposed to have, people in the crowd simply tried to stand in front of him. The sign wasn't torn out of his hands until he verbally provoked people in the crowd."
http://huntingtonnews.net/cgi-bin/ubb-cgi/ultimatebb.cgi?ubb=get_topic&f=1&t=001898&p=DUer ann_coulter_is_a_man writes:
"i was at the front waiting to shake edwards' hand, but two of my union friends (very good friends, whose credibility i vouch for 100%)at the back saw it all.
<...>
"a friend of mine who saw it has told me that as parlock repeatedly kept pulling out signs as they were taken from him, one of the union officials said to him "look, maybe you'd better go-you're getting your daughter scared" that's when parlock put the sign into her hands in defiance."
then someone grabbed it from her-oddly enough, no one recognized him, adding weight to the parlock's son as the ripper conspiracy"
http://www.democraticunderground.com/discuss/duboard.php?az=show_topic&forum=102&topic_id=836221#836249