My mom lost her ability to speak, and what you are going to find is that your life and how you interact with everyone will have to change. Human verbal communication is very fast. She will find it difficult to be part of normal conversations. Without lots of help, she will start to fade into the background of conversations, because she can't keep up. You will have to help her be a part of things. It will be a depressing experience for her, and you will have to help her. People will look at her differently like she is mentally handicapped. (I know she won't be, but people will assume that she is even unconsciously). I recommend finding her a therapist if she has to go through this transition.