A Hamelin Lady purchased a flower as a present for her mother but cannot get it to grow.
You cast a spell on the flower that a Hamelin Lady wants to give to her mother, but it didn't fully blossom.
This errand is available to complete after gaining entrance to Hamelin.
On the main street (northern section of Hamelin), talk to the lady on the balcony just south of the stairs leading up. Her plant won't blossom and it's supposed to be a gift. Inspect the plant and cast the Quicken Growth spell. Since it doesn't work, you must either fetch a Sunshine from your Familiar Retreat, or go back to the Shimmering Sands to catch one. Return with it and the flower will blossom.