Deadbolts usually come with two strike plates. these are the metal pieces with the hole in them that get bolted to the door jamb. One strike is the decorative one, the other is a thicker piece of metal that is recessed deeper into the frame, and sits behind the decorative one. The thicker one is secured with large, long, heavy duty screws, and is what prevents the door from being easily kicked in. A lot of installations result in the heavy structural plate ending up it the trash, and the only thing really doing the job is the decorative one, with a pair of silly little screws holding in in place. So, in your case, there is a good chance that the decorative plate is loose, or that the jamb is split, because it was never done correctly in the first place. At this point it's a matter of fixing the the damage and doing the work correctly. In my experience, the damage would have to be extensive before I thought about replacing the frame. I have managed to even use Gorilla Glue and clamps to rebuilt a door frame that blew apart when the door was kicked in. Good luck, and make your momma proud.