I love my MIL. But there's something in the tone of her voice when she talks to her grandson that…

I love my MIL. But there's something in the tone of her voice when she talks to her grandson that seriously hurts my ears. Not even kidding. I get headaches on whatever side is closer to her and she's never been a very quiet person (her voice wakes Joshua up on a semi regular basis cause she walks into our room without knocking and forgets to talk quietly in case he's sleeping).