1 9 5 7 . ▁ ▁She ▁returned ▁to ▁the ▁stage ▁in ▁the ▁Ron ald ▁Mill ar ▁play ▁Ab el ard ▁and ▁Hel o ï se ▁in ▁London ▁in ▁ 1 9 7 0 , ▁and ▁made ▁her ▁Broadway ▁debut ▁with ▁the ▁play ▁in ▁ 1 9 7 1 , ▁ear ning ▁the ▁first ▁of ▁three ▁Tony ▁Award ▁nomin ations ▁for ▁Best ▁Act ress ▁in ▁a ▁Play . ▁She ▁received ▁her ▁second ▁nom ination ▁in ▁ 1 9 7 5 , ▁for ▁The ▁Mis anth ro pe . ▁A ▁member ▁of ▁the ▁National ▁Theatre ▁Company ▁at ▁the ▁Old ▁Vic ▁from ▁ 1 9 7 2 ▁to ▁ 1 9 7 5 , ▁R igg ▁took ▁leading ▁roles ▁in ▁premi ere ▁produ ctions ▁of ▁two ▁Tom ▁Sto pp ard ▁plays , ▁Dor othy ▁Moore ▁in ▁J ump ers ▁( National ▁Theatre , ▁ 1 9 7 2 ) ▁and ▁Ruth ▁Car son ▁in ▁Night ▁and ▁Day ▁( P ho enix ▁Theatre , ▁ 1 9 7 8 ). ▁ ▁In ▁ 1 9 8 2 , ▁she ▁appeared ▁in ▁a ▁musical ▁called ▁Co lette , ▁based ▁on ▁the ▁life ▁of ▁the ▁French ▁writer ▁and ▁created ▁by ▁Tom ▁Jones ▁and ▁Har vey ▁Schmidt , ▁but ▁it ▁closed ▁during ▁an ▁American ▁tour ▁en ▁route ▁to ▁Broadway . ▁In ▁ 1 9 8 7 ▁she ▁took ▁a ▁leading ▁role ▁in ▁the ▁West ▁End ▁production ▁of ▁Stephen ▁S ond heim ' s ▁musical ▁Fol lies . ▁In ▁the ▁ 1 9 9 0 s , ▁she ▁had ▁triumph