Urgent: Kimberly's Aunt

Dear Lord, I never again want to promise to pray without actually praying. Kimberly's Aunt Barbara is in a coma secondary to anoxia for 12 minutes (somehow related to hip replacement surgery). What is the appropriate prayer in a situation like this? Grace...comfort...wisdom...mercy! Lord, have mercy. I don't know how old Barbara is, but that doesn't really matter. Have mercy on her, on the family, and (from my perspective) specifically on Kimberly. Give her safe travel and the knowledge and experience of your presence. In the healing name of Jesus~~Amen.