Olde English Bulldogs fighting

Question
We have 3 Olde English Bulldogs they are all spayed females. We had Bella first, she is approximately 3 years old. Bella is a more traditional looking Englifh Bulldog, heavier and small teet and flat nose. We got Carlee about 6 months later she is much more terrier looking with bigger teeth a little longer nose and in very fit shape. Carlee is about 2 years old. We got Cali back in January about 3 months ago - she is currently 9 months old and is physically somewhere inbetween Bella nd Carlee but she is not aggressive in any way yet and actually gets very upset if the other 2 fight. Carlee and Bella started fighting about a year ago, Carlee at first being less dominant. The fights became more severe and we called a behavorist and had a few telephone conversations which led to us taking steps to establish pack leadership such as making them sit and stay until we tell them its ok to eat and making them sit and calm down before we will pet them. The fights decreased and came pretty much to a stop, the 2 dogs seemed to have rebuilt a positive relationship with each other even playing together and lounging around together. Recently, they began fighting again (Same time as last year, begining of April). Last night they got in a fight while alone with our teenage kids and they were unable to break it up for 9 minutes which landed Bella in the emergency room getting staples in her ear to close the hole Carlee tore all the way through her ear. Bellas head is also very torn up and bitten all over the top. We will kepp them seperated by gates, pet carriers, etc at all times - is there any advice you can offer?

Answer
Bringing in the third dog may have resurrected the struggle for social status.  When dogs begin to fight on sight (and I don't know if this is the case), especially females, rehabilitation is difficult (and sometimes impossible).  There's absolutely not one shred of advice I can give you because I can't see these dogs, evaluate them, observe them together and interview you and your children.

Since you had good results with the behaviorist you hired, I suggest you make another appointment with that person.  NILIF (Nothing In Life Is Free) appears to be what s/he suggested and put into action.  Real determination of social status among these dogs must be done before NILIF can be used, since you will be greeting/feeding/interacting with the more naturally "dominant" (hate to use that word) among the three dogs.  The newest is also young and obtaining some level of maturity that can precipitate further problems.  Gating or confining one dog gives that dog the "punishment" of social isolation while at the same time giving the other dogs a clear signal that they are NOT so isolated, this is a tricky process.  Unless you (adults) are at home, all three dogs should be isolated from one another (behind closed doors, out of sight and sound) until the behaviorist is able to assess this situation.

A real certified applied animal behaviorist (which yours might very well be, I have no idea) can be found in or near your area at the following sites:
http://certifiedanimalbehaviorist.com/page6.html
http://www.animalbehavior.org/ABSAppliedBehavior/caab-directory
http://www.arkanimals.com/ark/dg_expert_referrals.html

Dr. Ian Dunbar has a video that discusses this problem and it will be informative but since he can't be there either (unless you live in Berkeley, CA), it will not cure this situation, just give you more information:
http://www.dogwise.com/ItemDetails.cfm?ID=DTB593