Rebecca has a very pleasant voice and sounds great harmonizing with herself. I agree with Lox (if I've read him correctly) that a bit of instrumental jangle would be good.

What bugs me - and this is a pet peeve of mine regarding English singers and speakers - is the apparent inability to sing two vowels in succession without inserting a "r" between them: "...and that was the last I sore of my dear". It's a minor quibble, but there it is.

Best of luck!