Your little dove now knows how her behavior can impact others and how she can manipulate the situation around. She knows how you will feel if she is too upset or too happy. She knows how the mood at home will change if she throws too many tantrums.
What you need to know:
At this point, your kiddo is able to understand emotions well, it is good for her personal development. But you need to make sure that she should not hide her emotions or supress them just to keep things balanced around her. Help her balance and feature her emotions well without being too tough.