Take Winna's kitten to the corrupted moonwell, release it, then bring it back to Winna. Once you have returned to Winna, click on the cat to release it to Winna.
This corrupted water can be used to our advantage, [player]. With just a small amount of the water, my kitten doubled in size, and seems to be stronger... somehow. These cats may prove useful...
Here, [player]. Take this cat carrier, and release the kitten inside next to the moonwell in the Ruins of Constellas. Heh, heh... I'm sure you'll be pleased with the results!
Return the cat to me, and I'm sure I can make it worth your time.