Both Uses of

sufficient
in
The Memory Keeper’s Daughter

Remembering this, her body seemed fragile suddenly, as if she were not the accomplished self-sufficient woman who'd taken a group to China and back but rather someone who might be swept away by the next gust of wind.†
p. 185.9 *

sufficient = adequate (enough -- often without being more than is needed)

He thought of Norah, who had become a self-sufficient and powerful woman, who courted corporate accounts with glittery assurance and came in from dinners smelling of wine and rain, traces of laughter, triumph, and success still on her face.†
p. 258.4