Answer:
Maddie's experience is BEST explained by the mixing of so-called happiness hormones plus her positive emotional state.
Explanation:
Most known happiness hormones are dopamine, oxytocin, endorphins, and serotonin. These are released when a person is in a positive emotional state, and pain relief is one of their most favorable effects. Since Maddie's interview was really important, the fact that it went well is a clear indication that she was happy when it was over, causing the releasing of happiness hormones which made her feel better from the toothache.