"I don't talk about my deal," I say as we walk. "Really."

I don't mean to be rude, I just don't mean to be polite either. It's a perfectly natural question, but I'm not going to answer it. I could lie to her and make something up, but that's seems stupid and needlessly inconsiderate. I imagine she'll take it in stride and lying to her would imply i don't respect her, which I do.