Just offering my advice. I know many dogs that have used a gentle leader at various stages and ages and they worked quite well. I also understand that the lunging is an issue but my main point was that the gentle leader may provide her with a little more control thats all??
Good Luck with whatever method you try.
Tabitha April 10, 1995 - August 23, 2013
Bomber April 10, 1995 - July 12, 2010
Winston Nov 15, 1999 - September 15, 2011
Sophie Aug 30, 2011
"UNTIL ONE HAS LOVED AN ANIMAL, PART OF THEIR SOUL REMAINS UNAWAKENED"
He is your friend, your partner, your defender, your dog. You are his life, his love, his leader. He will be yours, faithful and true, to the last beat of his heart. You owe it to him to be worthy of such devotion.