Found it last night.. hasn't changed.. she says ouch when you touch it..
Thank you ladies for your input. I have kept an eye on it, cleaned and medicated it since it had burst. She no longer complains of any pain and it appears to be healing. It hasn't changed or filled again. The markings around it are just from scrapping her arm and they have since healed. I've had family & friends comment on the same photo that I had posted on FB and they all are saying that it looks like some kind of insect bite. Since she has full function of her arm, no fever, swelling or anything else that treating the way that I have is fine. My BFF has been bitten twice by a brown recluse and she says that it looks nothing like her bites that she had, so that puts me at ease. As for Staph infection or MRSA, since she allows me to touch it and she bumps it I don't think that it is. My nephew had it and wouldn't allow anyone to touch anywhere near the area.