悦 — ecstasy, joy, rapture

吉岡さんのところの悦子ちゃんは、感心なことに、お母さんが仕事で遅くなる時は自分で晩ご飯を作るんだそうです。

I'm so impressed with Etsuko, Yoshioka's daughter; they say she fixes dinner herself when her mother is late because of work.