A gift is often given to plant ( often tobacco ) in trade for plants help along with prayers.
But I think a respectful correction would have left you with a respectful answer of what was disrespectful.
Or they (N8tive ) would have liked you to gift them some sage. Maybe the answer to your question lays with the source. Ask the N8tive what was disrespectful. If you can't ask N8tive I would just say a prayer with the plant and creation/creator that you be taught any thing you need from the plant, experience or creation. Then drop any guilt and move on with willingness to correct the situation when and if you can if anything needs corrected.