I played the flute all my life too, kalina! I taught myself to play several instruments as well, including the violin...
I think that just because your friend was not good at the alto clarinet, does not mean she wouldn't be good at the violin. If it has been a life-long dream, then I think she should definitely go for it...Why don't you suggest that she find a gently used violin, and a good beginner's guide?? I would say that it's best to actually go to private beginner's lessons though because she wouldn't want to learn bad habits as far as holding the violin or anything like that. Maybe a good beginner's class at first so she can learn the basics, and then at home with a guide...Good luck!! 30's is not too old to do anything!! I don't care if she's 60, if that's something she wants to do, then she should do it. There's nothing silly about that. SHE might go the rest of her life wondering and regretting....Music is so beautiful
Oh, I also wanted to mention that my brother never thought he had musical talents...But one day, he decided he wanted to play the guitar. I taught him the basics and the how to read music, and he was off! Now, it's his one of his favorite things to do, and he's good at it!