Difficult Song Help

Ok, this seems to be impossible, but here goes - my sister has been humming a song for days now, and has passed it on to me. This is the best we can do plinking it out on an out-of-tune piano.

C E G highC D B A G A
B A G C D E G A G E C D

I remember it being a slow, gentle song - my hubby thinks it has the words at the end “fresh as the dew”, but I don’t think so.

Thanks in advance!

Morning Has Broken

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Yes!!! Thanks so much! :slight_smile: