The fever that Nina presents is caused by the body's second line of defense, which represents innate immunity, which is the one that is born with the individual.
The immune system's first line of defense concerns the body's physical barriers. The second line of defense hurts the action of leukocytes, which are cells that fight inflammation and can cause reactions such as high fever, hunting pain, sneezing, among others. The third line of defense refers to the action of lymphocytes and antibodies produced by the body.
These three lines represent defenses that already exist naturally within the human body and for this reason are part of innate immunity.
She is being honest and direct in this response to a difficult situation. By responding in this way she is letting her friends know exactly how she feels about the situation without being angry or harsh or mean, just direct. With any luck her friends will now understand and stop pressurizing her.
