Now you pointed that out, it's impossible not to see. Darkness and swelling. Looks like her face gains have made it too tight, and probably got a low grade infection going on from being filthy
It could be from surgery.
A lot of people get infections or have their piercings reject when they have a major surgery/illness. The immune response from the body is in overdrive and reacts, trying to heal it or whatever.
Wouldn't be surprised if her "perfectly healing incision" is less than perfect and forcing her body to work harder.