Possible Clues:

• North Warwickshire town where sister misplaced a note ...
• Sister a long time nursing at Midlands site
• Sister, apprehensive initially, in college in Warwickshire town
• Sister dined, it's said, in Midlands town
• Sister worried, getting picked up in Warwickshire town
• Midland town with a lot on its plate by the sound of it
• Everything left on the plate in Warwickshire, by the sound of it