Why was Grace Darling awarded a medal?

Grace Darling and her Father going to the Rescue of the Forfarshire Steamer Grace Darling & her Father going to the Rescue of the Forfarshire Steamer. The Forfarshire steamer (commanded by Captn. Humble) left Hull for Dundee Wednesday Even'g Sept, 5th 1838. About 4 O'Clock friday Morn'g the 7th. She struck on the Rocks about a Mile from the Fern Light House broke right in two, when the after part of The Ship immediatly sunk & all were lost but 9 persons who got on the Rocks, from whence they were saved by the extraordinary courage of Grace Darling & Her Father. Repro ID: PAD6690 ©National Maritime Museum, Greenwich, LondonGrace Darling was born in 1815 and achieved great fame for the rescue she made with her father when the Forfarshire, a merchant vessel bound from Hull to Dundee, was wrecked on the Farne Islands on 7 September 1838.

Grace's father, William Darling was keeper of the Longstone lighthouse in the islands and they both set out in a coble to try and recscue survivors from the wreck. Despite a terrible storm they managed to rescue eight men and a woman. Grace and her father were awarded the Gold Medal of the Royal Humane Society for their courage. Sadly, Grace Darling died of consumption at the age of 27.