Update: So, I talked to my mom last night and brought up some of the things that you guys mentioned. She seems to be okay with everything now 
She admitted that it was he co-worker (who is one of her best friend) that was really the cause of her concerns. I reassured her that I’ll be safe and not put myself in any compromising situations.
I know which school I’m attending (CSU) and I’ll have 3 other roommates in my dorm. The dorms give priority to people living more than 50 miles away from the university, so I think at least one of my roommates will also be OOS. I told her that if I want to explore the city or go out at night, I’ll make sure to be with my roommates. This gave her more peace of mind