This advice-column-style blog for SLPs was authored by Pam Marshalla from 2006 to 2015, the archives of which can be explored here. Use the extensive keywords list found in the right-hand column (on mobile: at the bottom of the page) to browse specific topics, or use the search feature to locate specific words or phrases throughout the entire blog.
Q: My adult daughter needs help with her R. Is this something you can do with her by way of this Blog?
Therapy to remediate an incorrect R is like voice training: It cannot be done on paper or in a QA format like this. Your daughter needs to find a live therapist with whom she can work, either together in an office or via live on-line video chatting. Either should work okay if the therapist knows what he/she is doing to fix R.