I wouldn't mind betting the manager intimated to the girl that if she still wanted a job she should let him do the talking. This was an assault on a person not a crime against the store, but too many in management think they own you and can make that kind of decision of your behalf. What a pile, when there is a crime it's between the victim and LE. If it's bad for management's image, the operative phrase is tough tacos.
Also, some people in the US, including in LE, still have the funny idea that the boss at a location is the ultimate arbiter of all that takes place there. Bovine excrement. That was exactly how that coaching sex assault scandal went on for so long, because all in the know just went up their management chain, no one wanted to step outside and tell LE "Come sort out these felonies".