I fell in love with her recordings some time ago. Then I realized, yes, they all sound "samey". (English is not my mothertongue. Taking part at forums is a way to learn new words. "Samey" sounds great.)
But she is often accompanied by the best guitarist I know (Ian Carr); maybe she does not reach the heights of Niamh Parsons (whom I desperately love) but she is an excellent singer anyhow and has spread the folk repertoire outside the old cirles.
Huh - my favourite song? probably Our Town......