Directly:
* "Did you defiantly refuse to follow the instructions?"
* "Why are you acting so defiantly towards me?"
* "Are you defiantly challenging my authority?"
In a more nuanced way:
* "Is there a reason behind your defiant attitude, or is it simply a display of rebellion?"
* "Do you feel defiantly independent, or are you simply seeking attention?"
* "Is your defiant behavior a mask for insecurity, or a genuine expression of your beliefs?"
These examples show how "defiantly" can be used to express different levels of questioning and nuance.