This prayer is most simple and profound. Keep Nicole visualized in your mind and without saying anything concentrate your image of a bright healing light shining fully encapsulating her as you imagine she looks in the hospital bed and keep that focus on her for a full minute's concentration (set a timer if you need to). Turn off distractions and just think of her being bathed in the light.
If it is hard for you to keep your concentration that long, then also at the same time add more effort for concentration by envisioning a spot light within the bright light field also shining on her kidneys and lungs and harmful bacteria by visioning the spot light moving back and forth between lungs, kidneys and harmful bronchial tree bacteria so your visual image doesn't get distracted.
Then if your faith has a prayer for healing repeat it after the minute of light as a benediction. (many psalms). Or something beginning like Psalm 107;
Give thanks to the Lord, for He is good; His love endures forever; O Lord please lift Nicole out of her affliction, bring Your healing power into her kidneys and lungs and expunge the harmful bacteria from her. Let Your healing peace be upon her and within her.