Regardless of what one believes about the ordination of women, the Catholic Church has the right to its own beliefs and practices, and membership in it, or any other religion, is dependent on living by those rules. No one in America or the rest of the civilized world is required to belong to any church, let alone a given church.
My own brotherhood also does not ordain women or practicing gays and we seem to have had no problems. But then we don't own universities, hospitals, museums, huge cathedrals and tons of wealth.
That's the real reason they want to stay in the Catholic Church. If they leave because their spiritual position requires it they will abandon the wealth, power, and prestige of the Catholic Church and just become one more denomination. If it were truly a spiritual matter they would have left long ago, as Martin Luther and so many others did.
They don't believe the Pope when he says this is unacceptable so why are they still in that church except for the reason stated above? If it's about serving God they would have left long ago in order to be part of something more pure, if that's what they believe it is.
If you don't like what your church teaches and it refuses to change, go elsewhere. That is my advice to these women.
I have my own differences with the Catholic Church but 1) I recognize that they are fellow Christians 2) they are right on many important issues 3) they have the right to practice their religion as they see fit and those who disagree with them need to go elsewhere.
Like I said, the reason they refuse to leave the Church is because they cannot accept the fact that an organization as big as the Catholic Church does not follow their lead. They cannot accept the existence of something that is as big, rich and powerful as that Church when it will not get with their program. La Vatican has not bowed to the idol of Feminism and that is what is unacceptable to these people.