No Metro, she did not, I knew from the start that getting opportunities for guitar skill means I can't have any other skills. (It was pretty hard cause the girl I created needed to eat quick meals/at the restaurant the whole time O.o). Good thing Charisma skill can only be trained when you've reached at least level one by reading a book or attending class (or practicing a speech I guess).
On a side note, but not entirely unrelated:
On simswiki.info there's a list of books that you get from opportunities (the authors of the game came up with a lot of them!), and it shows that you can get them only on a certain level of career. I wonder if there is such a restraint put on skill opportunities (it's hard to define, since there's no way, even through cheating, to force opportunity).
For now we're basically left making our poor Sim a bonafied slacker waiting to play at the parties.