。
She was kind enough to help me.
Literal
She [topic-は] kindly [emphasis-も] me [object-を] helped-for-me.
助ける (たすける) takes the person helped with を, not に — 私を助けてくれた, not *私に助けてくれた. This is because 助ける frames helping as a direct action performed on the beneficiary. The ~てくれた adds the perspective that the action was received as a favor.