What is the time limit to press charges after altercation?

My teenage daughter who is 15 years old was being extremely sassy and aggressive towards me her mother. My live-in boyfriend who has been living with us for 2 years got involved and aggressively picked her up to carry her out of our room and slammed her pretty hard on the tile floor which scared both her and me as it injured her and put fear in her. This happened about 2 weeks ago. We took pictures of a large bruise the size of a softball she sustained in the altercation. He has had extreme mood swings from that day and even has left for several days not coming home so I am not sure that the altercation caused the mood swings or if the new mood swings caused the aggression during the altercation. He has since moved by his own choice and has taken most of his belongings but still has some large items here which is why he refuses to give my key back. I am afraid he might just show up unannounced but he refuses to give me a time he will come get his stuff. He is on probation for a DUI where was aggressive towards me when arrested. My daughter wanted to press charges and I told her to make the phone call and I will support that decision but she never did as we were both afraid too. I am not sure I did the right thing by letting this go especially now that he has a key to our house and is being very shady in his personality as I don't want anything to happen to her. Is it too late to contact the authorities or is this the type of situation where him moving out is good enough but I still have his property and I want the exchange to happen when my daughter is not in the house. I guess I am not sure what the best thing to do here is as I want to protect her and do right by her. Is this something I should press charges or is that looking like I am seeking revenge since we broke up after the fact and he moved out?