benchijimmy

My girlfriend was stung in August in Geneva by a black wasp about two inches long. As far a we could tell from internet pictures it was a Great Black Wasp. It is now November and her arm is swelling up in the same place, a lot. It looks like she is on steriods! And it is all red and splochy. Her arm swelled up a little when she first got stung and was red for a few days in a little area. It also swelled up again in September. It was her first bee sting (lucky her) so she doesn't know if she is allergic but these seem to be clearly allergic reactions. But three months later?! She does have other allergies like peanuts, corn, shellfish and soy. We have scowered the internet for the symtoms months later but to no avail. Only first treatment.
Any ideas or help?