Everyone has different things they like. Often we take what we like for granted and don't really consider why we like it until someone who doesn't like it makes us think about what draws us to those things. It's hard for most people to place themselves in other people's shoes, so it may be difficult for your mom to understand why it bothers you so much. From her perspective, it does nothing negative to her, so she doesn't see a reason why it should affect you.

You can try explaining in detail what bothers you about the shows and why you feel that way now more than before. Also ask her why she likes them and listen and try to understand each other. If she still watches them and it still upsets you, you can try making a deal with her. For example, she can watch at a time you are busy with other things to help you and you'll do something for her in return. You'll have to ask her, but remember that you both think differently, so you'll both need to compromise to work things out.