I used to dislike using too realistic portraits ingame, but when I tried it, I saw that it doesn't really show, anyway. The small portraits are too tiny to show too many details, so no big deal. And I like seeing some fresh faces, not just the old ones.
That's my sole hope. And since it's a new character, I guess it makes it even easier to attach a fresh face - I'll just wait and see how it looks in the game. As long as she isn't somebody famous(by the way, is she? "Hey, I just met Keera Knightley in a tavern in Trademeet and scored!" might be a little out of line...), it may still be all right.
I am not sure something of the kind might work for an existing and established character, however.