...for want of a better title.

What about 'Charlotte's Mask' as a title?

Thanks Tas. Not a bad idea. The name came to me because I had a Cure song going through my head called Charlotte Sometimes. The song was inspired by a childrens story in which the main character, Charlotte, goes to a boarding school and finds herself being propelled backwards in time 40 years where she becomes known as Claire. In turn, Claire is propelled forwards and becomes Charlotte. I've been thinking maybe I could call it Charlotte sometimes and create different versions of it.