A Stitch in Time by Amanda James
Choc-lit novel by a facebook friend. I liked the idea of the time-travel element, so bought this one for Kindle.
Sarah has been chosen by the mysterious powers and their agent, John Needler, to be a 'stitch' - in other words to go back in time and put things right after blips have made things go wrong. First she goes to Sheffield during the Blitz, then to 1913 London, then the American wild west. Each time she needs to save someone but doesn't know who until she gets there. And all the while she's falling in love with John Needler.
This is a lively and entertaining novel. I enjoyed the historical aspects of it which felt very well researched, and the atmosphere of each period was well drawn. It's an unusual plot. The only thing that let it down for me is that I wanted to know who these powers were, and how it is all organised, ie how the timey-wimey wibbly-wobbly stuff works. But it wasn't trying to be a sci-fi novel - it's a romantic comedy with a time-travel element, and as such works well.