▁ 1 9 5 2 , ▁she ▁tra ve led ▁for ▁a ▁year ▁throughout ▁Europe ▁before ▁res uming ▁art ▁training ▁in ▁Paris ▁in ▁ 1 9 5 4 . ▁She ▁attended ▁the ▁Ac adémie ▁Julian , ▁and ▁studied ▁under ▁Henri ▁Go etz ▁at ▁the ▁Ac adémie ▁de ▁la ▁Grande ▁Cha um ière ▁and ▁under ▁Stanley ▁William ▁Hay ter ▁at ▁At el ier ▁ 1 7 . ▁In ▁ 1 9 5 6 ▁her ▁first ▁solo ▁exhibition ▁was ▁held ▁at ▁Galerie ▁Vo y elles ▁( Par is ). ▁Later ▁that ▁year ▁Pet ry ' s ▁work ▁became ▁less ▁figur ative , ▁and ▁she ▁turned ▁to ▁abstract ▁art ▁while ▁living ▁in ▁Ib iza , ▁Spain , ▁from ▁ 1 9 5 8 ▁to ▁ 1 9 5 9 . ▁ ▁Career ▁As ▁one ▁of ▁the ▁first ▁artists ▁in ▁Quebec ▁to ▁adopt ▁lyr ical ▁abstra ction , ▁Pet ry ' s ▁ 1 9 5 9 ▁solo ▁exhibition ▁at ▁Galerie ▁Ag n ès ▁Le fort ▁( Mont real ) ▁drew ▁attention ▁for ▁“ simp licity ▁and ▁economy ▁of ▁harm on ious ▁line , ▁form ▁and ▁color ”. ▁In ▁ 1 9 6 2 ▁the ▁National ▁Gallery ▁of ▁Canada ▁organized ▁a ▁solo ▁exhibition ▁of ▁her ▁work , ▁P aint ings ▁and ▁Water col ours ▁which ▁tou red ▁Western ▁Canada ▁from ▁September ▁ 1 9 6 2 ▁to ▁May ▁ 1 9 6 3 . ▁Although ▁Pet ry ▁moved ▁to ▁London , ▁England , ▁in ▁ 1 9 6 2 , ▁she ▁continued ▁to ▁exhib it ▁in ▁Canada