Singer says Buckingham always blamed the band for their break-up
Legendary group will perform 'Sisters Of The Moon' for the first time since early 1980s
Singer hints that public reaction to new material will influence decision
Band will now play a seven-date UK stretch in September and October 2013
Band also add extra London date
The classic rock band kick off their world tour in April
Band reveal five live shows for September, October
Guitarist reveals that band have written material for new studio album
Singer also claims her drug addiction forced Lindsey Buckingham to quit the band
The classic 1977 album has just been re-released in several deluxe packages