Louise Glück has won the Wallace Stevens Award and the $100,000 stipend. The Wallace Stevens Award was established in 1994 and is given annually to recognize outstanding and proven mastery in the art of poetry. Averno is one of Glück's recent collections of poetry.
Poets.org has a bio for Louise Glück here. The New York Times also has an entry about Louise Glück winning the poetry award. A list of past winners can be found here.