Answer:
Decreasing her body's immune response.
Step-by-step explanation:
People tend to ignore that our immune system be weakened by several activities like smoking, alcohol, poor nutrition, stress, and more.
Basically, stress can change hormones and cells activities within the body, being decreased or increased, leading to failures. In other words, the immune system can be altered by stress, causing a poor response against infections and harmful invaders.
So, in this case, Jaylee's nervous and stress is likely to cause a decreased immune response within her body, which will complicate her health sate, or it will make slower her healing periods.