うしろめたさ の訳語→ guilt guilty question reticence
おずおずと の訳語→ awkward awkwardly cautiously coyly diffidently frightened gingerly hesitantly nervously reluctantly sheepishly shyly submissive tentative tentatively timid timidly tremulously
照れた の訳語→ sheepish silly-me
申しわけなさそうに の訳語→ apologetically regretfully
apologetically