Anyways I was fortunate enough to belong to a school district that had a speech therapist who rotated through schools. After three years I had improved enough to 'graduate' and have been saying words with 'r' ever since. I haven't thought about it in years but the actions of that therapist, and of the district to provide her, have greatly effected my life.
So tell your wife thank you for what she does, and please ask her if she is aware of any philanthropic organizations where people can donate time or money to the worthy cause of speech therapy. I can only imagine all the inner city schools in America without a speech therapist, and what that must do the the kids.