P.O.
Your supply was not disappearing - her needs changed and your supply changed to what she needed. You COULD go back to breastfeeding her on demand and for comfort and revitalizing purposes if you choose - your daughter obviously wouldn't mind.
The thinner clear white is usually foremilk (more for rehydration and thirst quenching) whereas a slightly thicker milk that is opaque white or slightly yellow/blue/green/orange - depending on what you are eating - is the hindmilk (nutrient and fat dense for weight gain and nutrition).
You will continue to produce milk until menopause... it won't be noticeable or cause engorgement, but it will be present at the most minimal amounts that will allow your body to quickly re-lactate if necessary,