I think this might be more complex than simple when judged by Western Catholic standards. While this is definitely a question that fits under the category of Liturgy and Sacraments the OP might get better suggestions for who to contact in the Eastern Catholics forum.I think this matter is both incredibly simple and somewhat complex at the same time.
She definitely needs to look into this. She needs to clearly understand to which Catholic Church she belongs.First off, if both of your parents are Eastern Catholics, then you are an Eastern Catholic as well even if you were baptised and raised in the Latin Church. Church membership is transferred through the parents, not through the minister of baptism. So there may be a little legalese to work through. I don’t know if the Latin Church would have legal competency to hear your case, you might need to speak with an Eastern Church Canon Lawyer. You should definitely look into that, and your local Latin diocese will be able to help you with this.
I’m not sure things are this black and white. But she does need to check out what is required for Eastern Catholics to marry Orthodox and whether or not those rules were followed in a way that would affect validity of the marriage.Secondly, if you did not know that you were marrying an Orthodox Christian, if you did not know that it was an Orthodox wedding, and if you did not have the permission of the Church to marry outside of the Church then you were not validly married. This seems like a clear cut case. If you were given permission to marry outside of the Catholic Church, then I still ponder the validity of the permission, assuming that a Latin ordinary may not have the authority to dispense an Eastern Catholic from Canon Law, since you would be bound by the Eastern Codes, not the Latin Codes.
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**Everything I’ve said here may not necessarily be the case. This is the best reading possible from the information I have. What I am trying to show you is that your case is not hopeless. You’ve not even begun to explore your options! So keep your chin up!![]()
She definitely should not give up!