▁T rollo pe , ▁for ▁example ) ▁worked ▁method ically ▁at ▁her ▁writ ings , ▁from ▁ 1 0 ▁a . m . ▁until ▁ 2 ▁p . m . ▁each ▁day , ▁taking ▁around ▁nine ▁months ▁on ▁average ▁to ▁write ▁each ▁novel . ▁Yet ▁despite ▁her ▁critical ▁success , ▁she ▁found ▁it ▁hard ▁to ▁make ▁a ▁living ▁out ▁of ▁fiction ▁writing . ▁ ▁Films ▁Her ▁novel ▁The ▁But ter cup ▁Ch ain ▁( 1 9 6 7 ) ▁was ▁made ▁into ▁a ▁film ▁of ▁the ▁same ▁title ▁( 1 9 7 0 ), ▁for ▁which ▁she ▁worked ▁on ▁the ▁screen play . ▁Also ▁made ▁the ▁basis ▁of ▁a ▁ 1 9 8 4 ▁film ▁were ▁her ▁w art ime ▁mem oir s ▁of ▁Not ting ham , ▁Secret ▁Places ▁( 1 9 8 1 ). ▁ ▁Pub lished ▁works ▁ ▁C ave ▁with ▁E cho es ▁( 1 9 6 2 ) ▁ ▁The ▁Som n amb ul ists ▁( 1 9 6 4 ) ▁The ▁God m other ▁( 1 9 6 6 ) ▁The ▁But ter cup ▁Ch ain ▁( 1 9 6 7 ) ▁The ▁Sing ing ▁Head ▁( 1 9 6 8 ) ▁Ang els ▁Fall ing ▁( 1 9 6 9 ) ▁The ▁B irth day ▁Un ic orn ▁( 1 9 7 0 ), ▁illustrated ▁by ▁Michael ▁For eman , ▁ ▁The ▁Kind ling ▁( 1 9 7 0 ) ▁A ▁State ▁of ▁Peace ▁( 1 9 7 1 ) ▁Private ▁Life ▁( 1 9 7