with luck, she only will have to have the heads rebuilt, as although these engines are "non interference" meaning the valves do not usually hit the pistons, the issue they do have is that the valves can clip each other. which then bends valves and shit.
I had a tensioner fail causing a belt to fail in a BH legacy, it needed a full head rebuild or a second hand engine.
They dont usually make any funny noises they just let go and end of story.
sounds like it is the old, stick a cambelt done sticker on it, and get it out of the yard quick