Dear Syag,
Some reports have it that the caller was reporting about her boyfriend. Others just say she called about someone. If she told the dispatch ‘boyfriend’ and the police were told ‘someone’ that is a crucial difference.
Nowhere does it say that the police ID’d Mr. Blake. The only newsbit (If we are to believe it.) is that he was involved (Settling or fighting?) in a dispute between two women. Did the police just assume that they were called to arrest him? Nothing is clear to me.