The Asylum

I've read The Asylum (also called Asylum) by John Harwood which is set in late 19th century England.  A young woman, Georgina Ferrars, wakes up in an asylum and is addressed by a different name.  She cannot remember coming to the asylum or events immediately preceding that time.  Her identity has essentially been "stolen".  The story is told in the form of a narrative by Georgina, also Georgina's journal and a series of letters written by another female character.  Georgina gradually learns the truth as to why she is confined in the asylum and plans her escape.  Finally the mystery of her confinement is revealed.  I found the story a little confusing with the different time periods and working out who was related to whom. 31/2/5