You had a question about something in nature one day and what other person is there to ask besides Cassius? Since she knows so much about nature, there's a high chance she can answer your question.

When you went in she seemed to be pretty happy considering she was smiling despite being busy on something. She also spoke in a pretty cheerful voice when she did say what she asked why you were here.

“Do you have a question or do you wanna talk about something? I don’t mind either way!”