Her name is Mallara, and she is quite
She lives in a house in the east part of Skyloft. After Link obtains the Gust Bellows, Mallara will ask Link to clean her house, which is covered in dust and cobwebs, in exchange fo a reward. Once Link uses the Gust Bellows to clean all of the dust in her house, she will reward Link with 20 Rupees, as well as 5 Gratitude Crystals.
After doing this, Link can go to Pipit's house to hear an argument between Mallara and Pipit. Pipit will chastise Mallara for paying money to strangers for something that she can easily do herself, as money is tight, and Pipit is struggling to stay in the Knight Academy due to financial issues. Despite this, she continues to ask Link to clean her house, paying him 20 rupees each time.