▁ ▁Between ▁ 1 9 8 7 ▁and ▁ 2 0 1 4 , ▁she ▁created ▁three ▁mur als ▁across ▁the ▁e ighth , ▁nin th ▁and ▁t enth ▁flo ors ▁of ▁the ▁Queen ▁Elizabeth ▁Queen ▁Mother ▁Wing , ▁St ▁Mary ' s ▁Hospital , ▁London . ▁ ▁In ▁ 2 0 1 7 , ▁alongside ▁Y oko ▁O no ▁and ▁Trace y ▁E min , ▁R iley ▁don ated ▁art works ▁to ▁an ▁au ction ▁to ▁raise ▁money ▁for ▁Modern ▁Art ▁Oxford . ▁ ▁Art ▁market ▁In ▁ 2 0 0 6 , ▁her ▁U nt itled ▁( Di ag onal ▁Cur ve ) ▁( 1 9 6 6 ), ▁a ▁black - and - white ▁canvas ▁of ▁d iz zy ing ▁curves , ▁was ▁bought ▁by ▁Jeff rey ▁De itch ▁at ▁S othe by ' s ▁for ▁$ 2 . 1   mill ion , ▁nearly ▁three ▁times ▁its ▁$ 7 3 0 , 0 0 0 ▁high ▁estimate ▁and ▁also ▁a ▁record ▁for ▁the ▁artist . ▁In ▁February ▁ 2 0 0 8 , ▁the ▁artist ' s ▁d otted ▁canvas ▁St atic ▁ 2 ▁( 1 9 6 6 ) ▁brought ▁£ 1 , 4 7 6 , 5 0 0 ▁($ 2 . 9   mill ion ), ▁far ▁exceed ing ▁its ▁£ 9 0 0 , 0 0 0 ▁($ 1 . 8   mill ion ) ▁high ▁estimate , ▁at ▁Christ ie ' s ▁in ▁London . ▁Ch ant ▁ 2 ▁( 1 9 6 7