https://youtu.be/um4-d7VzZiE?t=1m2s The video says it all. I get the feeling she has the baby blues and the patient won't have their own type of blues for very long.
Patient: 'Blue eyes! Blue dress attire! Blue...,meds?'
Mercy: "I've got blue for days! Take this here blue pill. I'll treat your blue bells."
Patient: Wha-...is this even remotely necessary!?"
Mercy: "I thoroughly insist 100%. I have 4 hours to cure you. We must start right away."
Patient: "Oh lord have mercy..."
Mercy: "How about you have me instead."
Mercy: ( ͡° ͜ʖ ͡°)