Acting help for musical theatre performance?

Well, in the movie she's singing it in a church, so no dramatic or wild movements. I think you can pull this song off without too much acting, I suggest walking slowly around while singing so it won't look too awkward, and just sing with a sad/pleading look on your face. You can pull this one off without making too many arm gestures, since it's kind of a calm, sad song, not aggressively dramatic or emotional. In the movie she's basically walking around the pews praying out loud wistfully. Imitate her!