This is an interesting question, because the answer depends on which part of the play is being analyzed.

On one hand, if analyzing the play from the first few acts, Nora can be seen as Torvald's victim because of the way she is portrayed as a subordinate wife who does whatever her husband says without question. On top of this, she even has a tendency to make silly noises and playful gestures with her nose to charm Torvalds into giving her money, which makes her appear as a little child attempting to appeal to her parent.

However, if the final few acts are examined, along with prior knowledge of the previous acts, then it is more apparent that both of the Helmers are victims of their own environment. Torvalds, a man in his current society, is expected to have unwavering stability in his position as manager, and to not have to depend on anyone to take care of his personal problems, especially a woman such as his wife, Nora.
Nora, a woman in her current society, is expected to be submissive and not step out of line when it comes to domestic affairs.