Sure, Cassie shooting a state trooper could get her in some trouble, but Jerrie, Danielle, and Grace can obviously all vouch for Legarski as one of their kidnappers, with Grace knowing that he killed the fisherman and shot her with arrows.
Legarski was more or less the big bad, and I’m not sure killing him off in Episode 5 of 16 was a great move.
This presumably means the girls are rescued, Cassie and Jenny are out of trouble with the local authorities, and the case is at least half closed, since Ronald is still out there.