I haven't read those books however I hope you change your mind about characters made famous by another author and read 'Wide Saragasso Sea' ByJean Rhys. It is based on the character from Jane Eyre the madwoman in the attic, Rochester's terrible secret. It is compelling, haunting and a great work of art.
I just started 'Zone One' by Colson Whitehead. The child I mentor loves zombies so I want to read it first to see if it is 12 year-old safe. Already I love it.