Her latest novel, Llyfr Glas Nebo (The Blue Book of Nebo), won one of the highest awards for Welsh-language writing, the prose medal at the Eisteddfod, in 2018, as well as the Welsh-language Wales Book of the Year Award and the Fiction and People’s Choice categories for 2019.  Since then it has become a best seller in the Welsh language market, is being adapted for stage and film, and is shortlisted for the 2019 Na nOg Prize for Literature for children and young adults, a prize that she has won three times since 2010. Her English translation of the book, published by Firefly in the United Kingdom and Deep Vellum in the US, won the UK’s Yoto Carnegie Medal for Writing in 2023. Her previous novels for adults have been shortlisted for and awarded the Wales Book of the Year and have been selected for the Wales Literature Exchange Annual Bookcase, including her novel Blasu (Y Lolfa, 2012), which was published in English translation as The Seasoning by Honno in 2015.