User blog comment:Damesukekun/Song Translating and Mistranslating/@comment-24788382-20140725165514/@comment-1523675-20140726113920

There is no strict rule for translating interjections. For example, English "oh my goodness" can be 「しまった」「何てことだ」「大変だ」　and many other Japanese terms. If Aniplex's wording is consistent with the context, it's okay.