Our legal system, especially for sex crimes, has a ton of issues. Remember, the NYPD's sex crimes unit is even currently under federal investigation for how badly they handled investigations/reports of sex crimes, including filing wrong complaints, not doing even basic investigations or convincing victims not to report their sexual assault because detectives didn't want to do the work.

https://www.pbs.org/newshour/politics/following-years-of-complaints-justice-department-to-probe-nypd-sex-crimes-unit.

https://apnews.com/article/crime-police-new-york-sexual-assault-5c515e3b034e1e937689f37a063adb61.

Then add in that judges and prosecutors tend not to take sex crimes seriously either, and you've got situations like this.