機嫌を

one's mood; one's favor

→ 機嫌
phrase Rare #32,770
one's mood; one's favor Usually followed by verbs such as 機嫌を取る, meaning “to placate someone” or “to curry favor,” and 機嫌を直す, meaning “to cheer up” or “to get over being upset.”
JA: 彼の機嫌を取るのは大変だ。
EN: It's hard to placate him.

機嫌を直して

Cheer up.

— アメリ (2001)

彼女は微笑んで私の機嫌を直した

She smiled and cheered me up.