Religious-only marriages are not legal marriages in Illinois. No marriage license results in no-marriage. Illinois does not recognize common-law marriage either.
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I agree with my colleagues who have answered this question multiple times. The State of Illinois does not recognize a "marriage" ceremony performed solely by religious acts. Thus, the State of Illinois does not require a person to file for a state-law controlled divorce after a religious-only ceremony.
Without being able to speak to people and review all of the relevant documents to confirm all of the facts, the hypothetical you have posed sounds to me like the first "marriage" was not valid under IL state law, and the second "marriage" would be valid because, under state law, she was only married one time . . . the time she got a marriage license from the county in IL.
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No license equals no marriage
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