By ignoring the women who survived who said he had a Yorkshire accent?
By telling other women it wasn't the ripper because they were not prostitutes?
There may have been female officers working on the case but most were typing, making tea or collating index cards.
I'm not sure when women were allowed to become detectives but I doubt there were any on the ripper team
Yes some serious mistakes were made. Especially Oldfields inflexible stubborn pursuit of someone with a North East accent, but the areas where PS committed his crimes, mostly West Yorkshire, were densely highly populated high crime areas. Infact West Yorkshire still has the highest rates of serious crime in the country.
The police already had to deal with many other murders, and that included the murder of prostitutes, serious assaults, and DV. It isn't some rural countryside county, WY is a metropolitan county, with millions of people. All this unfortunately contributed to it being easier for PS to get away with his crimes for so long. He was using road networks that are some of the busiest in Europe. He was also just one of many men in WY associating with prostitution. One of the surprises at the time, and I do remember it being reported on, because I lived there, was just how many were found to be involved in prostitution during the investigation
The officers doing the indexing were both male and female and it was an important part of any investigation at a time, a time before computerised systems, and yes some CID were women