Both Uses

ambivalent
in
Circe
(Edited)

Rage and grief, thwarted desire, lust, self-pity: these are emotions gods know well. But guilt and shame, remorse, ambivalence, those are foreign countries to our kind, which must be learned stone by stone.
p. 156.8

ambivalence = uncertainty or indecision
One moment I would be laughing, and the next his jests turned sour in my throat. ... My ambivalence, of course, only encouraged him. Any challenge was a game, and any game a pleasure.
p. 157.7 *

ambivalence = mixed feelings

Definitions:

(1) (ambivalent)
having mixed feelings about something -- such as when part of you wants to do something and part of you does not
(2) (meaning too rare to warrant focus)