Not Big on Poetry, Please HELP! :o(?

im not sure but it seems like the speaker is a witness to the boy being beat and he/she is reliving the past of him being beat before ny someone that he used to know and love. The woman seems to be beating the boy because of his faults and the fact that she too has been the victim of abuse and by beating the boy she is "purging" and "avenging" her past.