Grace222, know what you mean, been there. As if taken hostage each and every time. Worst part is seeing how well the narcissist can manipulate it's surrounding, and people half getting it and half not. Try take it as a compliment, even if one experience one would not want, as the narcissist knows you know what it is all about, that's why you are a threat. Be glad it is no relative, family member of yours, then you are more stuck.
Good thing you could congratulate the girl on your own and that your daughter too got away from the narcissist's clows. Good too you stuck to your gut feeling.