Should I contact CPS for my friend who is living with her abusive felon father?

Hello, a friend of mine was recently placed in a home with her biological father who she hasn't seen in thirteen years. This man had been in and out of prison for the past years for drug abuse and can be found on many felon watch sites. My friend barely knows the man but is uncomfortable to be with him. He has gotten drunk around her at inappropriate times. This man is unfit to take care of a sixteen year old girl. He has no means of transportation and does not make a high enough income to make it on his own let alone with a sixteen year old daughter and a seven year old son. During a few of his drinking incidents he had gotten physical with his son. He uses foul language with my friend and brother and calls them inappropriate names. My friend is very uncomfortable and was forced to move in with this man. She had an hour notice before being ripped away from her whole life, causing her to quit her job, leave her private school, and live In an unsafe environment. I am worried for her safety, as is she, for this man is a convicted felon and he has been known for physical abuse, along with very deep mental abuse. He has also acted in such ways that cause her to feel sexually threatened, especially when he's intoxicated by alcohol or marijuana. This girl has told me of her mental stress and emotional pain in this situation, and has expressed how she wants help, but she is afraid to tell someone. I'm uncertain about whether or not this situation would qualify as child abuse, but I do know that this girl is scared for her safety in this situation. So I'm wondering whether I should make a report or just let it be.