@Germlat,
She is a friend.. But "you" would rather see an annulment as apposed to Divorce, is this because of culture? Are you concerned for her future, as a divorcee should that happen?
I don't believe she will do that in any event for some time. But, I don't believe either that they will be happy together. It will play on her mind. Be a friend and help her let it go to move on, into this marriage and try to make it work, not hold onto the "past" as you make mention...
It's good to be a friend. But, the best way is to be there when they need you not pre-empt the future or interfere with the present.