Q: Is it possible to win with a Goal that could use Saffron or Yolanda if Bridget is in play?

A: As per previous precedent (see link below) If you played Saffron or Yolanda while Bridget was already in play, the Keeper would be in front of you for a split second before she would have to be discarded, and that split second is long enough for you to meet Goal conditions and win.

Precedent from this question.