Could be genetics and/or stress. Only you can answer that ?. Only through observation can you tell that. From what i have heard about anything "chem" family is it can hermie. The breeder says stress related. I have heard some people having drama with them...no saying its something serious i have heard stories.
Like @gnome said, you shouldnt throw it out cuz you seen a couple seeds. They could have come from a male you didnt cull quick enuff.
Killing plants before you see their full potential is not good...could have been stress. Now you just blanked on a great cut...DONT throw them away unless you see enuff male flowers that its worthless to keep plucking them off
Peace
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