Sounds like since the ENT said the hoarsness could be due to vocal abuse, the speech therapist feels she needs to teach your daughter how to speak with out yelling, or in the case of what she drinks that your daughter needs to stay away from cofee and soda and doesn't necessarily believe that your dd does not drink this. I think at the next appointment I would aske her specifically to explain how these excercises work in helping to cure the hoarsness. Don't be snippy at her but say something like "so we can carry over these activities at home can you please descriibe how the activities you are doing with my daughter work?" that leaves you making her sound like the expert and her having to answer your question and by that you can judge if this therapy is appropriate for dd. If after that you do not see the usefulness of the therapy and your daughter isn't a yeller, screamer, avid singer, or otherwise uses her voice excessively as in way more than other kids her age, make an appointment with another ENT. Maybe there is something else going on or nothing at all. There is a girl my daughter goes to school with that has a very raspy hoarse voice it has been that way since she was a preschooler she is 12 now. I am not sure that the parent has looked into it medically but that is the voice that she has always had.