I think it is great that you are praising the daycare kids. It is so much easier to focus on the things they are doing wrong.
That being said, I do think there is such a thing as too much praise. Some people are so extreme and pretty much praise children for breathing! heh heh. Also, there are different kinds of praise. Something more meaningful e.g. "I saw that you took a deep breath to calm down." or "I noticed you used your words with Bobby." Which is more concrete/observational Vs "Good job Bobby!" which is more cheer leading.
There is also a school of thought that suggests the later is less helpful for kids as they start to look to external reinforcements rather then learning to do things for themselves.
I wouldn't worry about it too much. They said what they needed to say and they will parent her how they choose. You can continue to do as you are doing but maybe as you told her, ease up a bit to help her develop these skills.