vexed(adjective) – annoyed, frustrated, or worried.

source- https://www.google.com/search?q=vexed+definition&oq=vexed&aqs=chrome.1.69i57j0l5.4962j0j8&sourceid=chrome&ie=UTF-8

On chapter 14 it says, ” Helga’s own feelings were mixed; she was amused, grateful and vexed. It had all been decided and rragned without her, and also, she was a little afraid of Olsen.”

After knowing what this word means,  i have a better understand about how Helga feels around Axel Olsen.