How can a deaf player detect where monsters and caves are?

I see all the time that the recommended ways to mine is to dig deep and listen out for the sounds of monsters in caves.

My niece is deaf, and whilst she loves the building aspect of the game, tasks like "finding caves" or "knowing a monster is behind you" are obviously more difficult.

Are there any settings or mods that can be used to give a visual indication that the player is in the vicinity of mobs? Especially something showing the direction the sound is coming from.