Here are my concerns. Hopefully, someone can make this make sense
1) the girls who just saw someone weird actively try to take their lives, go into a diner to eat and then end up dancing on the table of guys they've never met. How is that reasonable?
2) the girls were not satisfactory in their show of fear for their lives and were too nonchalant about the gravity of such a situation, making it unrealistic
3) why did the girls have to go to the hospital with the woman who was in labour? Considering again the fact that their lives were in danger and they have no real purpose in the hospital
All in all, I understand the writers were trying to create an atmosphere for the violent confrontations to create the action scenes but I do think it was poorly done. There are much smarter and creative ways to achieve this. I could give pointers if needed