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