Status Updates From Sea Witch Rising

(after ch. 2) Man, it's been a long time since I have read the first book. I don't remember the titles being named after who has the point of view. Regardless, it looks like we have two of them- Evie, the Sea Witch we read about in the first book, and Runa, twin sister of Alia, the little mermaid chasing love on land. But how can Evie's spell be undone?