Have you tried coconut oil on the skin infection, what about lavender essential oil, or manuka honey. All have antifungal, antibacterial effects. They help kill staph, even MRSA.
The antimicrobial activity of high-necrodane and o... [J Altern Complement Med. 2009] - PubMed result
More Good News on Coconut Oil
In vitro and in vivo evaluations of the activities... [Antimicrob Agents Chemother. 2005] - PubMed result

Epsom salt soaks will help with healing also.

Effect of medical honey on wounds colonized or infected with MRSA.

Full healing was achieved in seven consecutive patients whose wounds were either infected or colonised with methicillin-resistant Staphylococcus aureus. Antiseptics and antibiotics had previously failed to irradicate the clinical signs of infection.
Effect of medical honey on wounds colonised or inf... [J Wound Care. 2007] - PubMed result

Clinical Studies Show Honey Kills MRSA - Associated Content - associatedcontent.com

The trick to the honey is that its hydrogen peroxide decomposes much more slowly than what's in standard honey. This special honey is made from the manuka bush, Leptospermum scoparium, only found in New Zealand.
The buzz on manuka honey's MRSA-control properties - - RNweb

Manuka Honey Destroys MRSA and Heals Staph Infections
Manuka Honey Destroys MRSA and Heals Staph Infections

Found this portable tube of Manuka Honey Treating MRSA with Manuka Honey



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