The True Queen by Zen Cho (2019)Read about the other entries on the list.
Arriving in a tumultuous storm, Sakti and Muna know their names but nothing of their past. The pair are so similar that the Janda Baik islanders assume they must be sisters. Offered a home by formidable witch Mak Genggang, the pair start new lives. One small complication: the sisters are both cursed: where Sakti is full of magic, Muna has not a jot. Sakti’s curse is more existential: she is progressively vanishing. Perhaps the English Sorceress Royal’s college for magically gifted women can help…
It’s convenient that, even though the English are her enemies, the Sorceress Royal is a friend of Mak Genggang. It’s less convenient that Sakti vanishes while the sisters are traversing Faerie to reach England.
It is up to powerless Muna to rescue Sakti. If only Muna were not utterly powerless. If only Faerie were not on the verge of declaring war on England.
--Marshal Zeringue