Kitty Has MRSI - Asthmatic and Cannot Get Rid of the Infection

Hello all. Perhaps some of you might have experience with MRSA, methicillin-resistant staph, or MRSI, methicillin-resistant staph intermedius. In August 2009, my baby w/ feline asthma (she's on inhaled meds) ended up with MRSA in her nose, along with e-coli and streptococcus aureus (all in her nose). Heavy injection super bug antiibotics, antibiotics for the e-coli and the strep. Now, she has MRSI, staph intermedius. My vet continues to state that because of her compromised immune suppression, she is unable to fight off her own bacteria. She's been on super bug antibiotics again, but this time, the MRSI is far more resistant than the MRSA was last summer. I am at odds on what to do. Her nose is complete black, the hair is falling out on her nose now, and I'm at a loss, truly. She said that the inhaled meds would cause this breakdown in her ability to fight her own bacteria, but I'm starting to wonder if she could have a food allergy that might cause this infection. Any thoughts or suggestions? She gets 1 tsp of wild alaskan salmon oil and immune support vitamin per day, along with her inhaled meds for asthma. She seems to be fine now, but I worry about meningitis and pathogenic diseases that can come from staph infections.

You sound well informed about MRSA.
Has your cat had a work-up by a vet specialist in infectious diseases?
If not, and you have access to a top specialty practice, that would be my next step. If you have a school of veterinary medicine, that might be a good choice. At the very least you might give one a call to see if someone will talk to you about this.

Off the top of my head...
Cornell and UC Davis might be useful resources for you.
http://www.vet.cornell.edu/fhc/news/mrsa.htm

Because it's possible to transfer the MRSA bug from cat to human then back, have you been tested?
If the human is not immune suppressed she will not become ill but could re-infect an immune-suppressed cat.

I hope other members have some feedback for you.
Please keep us updated...
we are here for you.
EDIT: One other thought...
is your kitty's asthma well controlled?
Do you think that you could step back the dose of her inhaled meds to give her immune system a break?