Unfortunately the only thing coming to mind about Christian + God poem is Eliot's Ash-Wednesday which is, uh, a good poem but one I doubt is relevant.

So! My generic go-to good-poet-generic-poem is Robert Frost. The Road Not Taken is a classic for a reason, and that would work great if she's got a career path that isn't, like, corporate America. I have opinions on this poem and how it is used but it still remains a great poem. Stopping By Woods On A Snowy Evening is also great, and thematic for the time of year if she lives in a place with snow.