D.,
Having dealt with this first-hand, I understand how scarey it is. My son was diagnosed w/ staph infections in his diaper area back in July and it's been an issue ever since. Thankfully, we've been able to keep them under control with natural products (and thankfully, we didn't circumcise him at birth b/c the things that could've happened are too terrifying to think about!!!).
First of all--were the wounds cultured to test specifically for MRSA or did your doctor just look at them & say that's what it was? Unless it's cultured and comes back positive, it's probably just a staph infection. Everyone has staph on their skin, some people are just, for whatever reason, more prone to getting infections from it than others.
Our doctor (Dr. Lisa Caso in Easton--fabulous pediatrician!!!) prescribed Altabex ointment (a VERY expensive antibiotic) which worked ok. However, some one had suggested that we try Manuka Honey (which you get from a health food store) & that has worked miracles!!!!!!!!!
The Manuka Honey is a theraputic honey & it IS a lot more expensive than your standard honey but it's worth every cent!!!!
You just take a q-tip & smear some honey on the sores at every diaper change. The honey cleared things up pretty quickly. And we've used nothing but that on him when ever he starts to get one & 9 times out of 10, if we apply it as soon as we see the signs of another boil starting, it gets nipped in the bud & never becomes a problem!
In addition to the honey, if he gets or is starting to get an infection, we use Colloidal Silver spray (also from the health food store) and another herbal spray (if you messege me I can get the name of it for you) that we got from our doctor that is specifically formulated to help your body fight Staph & MRSA! We also use a powdered Probiotic made for infants to keep the healthy bacteria levels in his body up.
Just know that there ARE lots of things that you can do to help your daughter's body fight this bacteria naturally without compromising her immune system or building up her resistance to antibiotics (which, don't get me wrong, have their purpose! I just think that you need to reserve them for when they're REALLY needed so that you don't end up w/ anitbiotic resistance, since MRSA IS antibiotic resistant!).
Also, if you're breastfeeding, or have access to a friends breastmilk, you can apply breastmilk right to the sores. Since breastmilk is largely made up of white cells, it kills the bacteria.
Good luck & again, feel free to messege me for more info!
A.