From the text, it can be predicted that "Nora is going to tell Helmer to treat her better".
We can deduce that when Nora stated that she has not be happy but rather merry, she was pointing out to Helmer that she wanted to be merry and not just merry.
Nora pointed out that their marriage has been more of playing and catching fun but still felt that there is something better that can come forth from the marriage. So, the prediction is that she will tell Helmer to treat her better.
