I don't think you're wrong to question your therapist's opinion. I guess perhaps take her observation as a suggestion to just be aware of what is happening to you, but if you really think your behavior was just good ole' normal excitement about a hobby and other things, then maybe that's it. We folks with bipolar should be allowed to be excited without being labeled hypomanic or manic. It's possible your therapist was overreacting. I have sometimes found that my psychiatrist misinterpreted my extra good moods as hypomania.