Let's get a few plot points straight. Harry's godfather, Sirius Black, is still alive. He was put into Azkaban for a time because the Ministry of Magic thought that Sirius was James Potter's secret keeper who betrayed him. That was not so. It was Peter Pettigrew who betrayed the Potters. This led directly to the Potters' deaths and the fact that Harry was "the boy who lived." After quite a while in Azkaban, Sirius escapes. (However, we spend most of the third book thinking that Sirius is the "bad guy" until we learn the truth by the end.) The Ministry, of course, refuses to believe that Sirius had not betrayed the Potters, so Sirius has to remain on the run (keeping in touch with his godson, Harry, while in hiding). The fourth book in the Harry Potter installment (The Goblet of Fire), involves Sirius only in regards to his correspondence with Harry. Sirius is finally revealed to fellow wizards in the final scenes, however, in order to precede the next novel.
In regards to the "women" you are speaking of, there certainly ARE female villains in the Harry Potter series; however, there isn't much of a focus on them in The Goblet of Fire. The female villains appear in their full glory in later installments of the series. Thus, considering that Sirius Black is still alive, there is no such set of characters as "the women who killed his godfather."