That is interesting - first case I have heard of where incorrect marital status, doesn't matter what, was not disqualified. You're already indicating you think there is a problem by telling her not to submit the DS260 yet because it will contradict the entry.
I would just point out that the poster needs to be prepared to take the risk of losing the medical and visa interview fees and bear the consequences of declaring immigrant intent to the US by submitting a Ds260, by going ahead with the application.
There is no risk involved.
First of all: the US consulates know that comprehension of the English language is quite a problem in countries where English is not a first language (how many countries of the world have English as their first language?) Which is why major notices are put up
Secondly: The only marital discrepancy that was mentioned was that of "not including 'eligible' family members at the time of entry" and it was specially put up so that people would not say they didn't get that part.
Third: It all depends on what you call "incorrect marital status" especially when there are no options that capture those in potential marriages. Take note that the options listed are
Unmarried, married, divorced, widowed, or legally separated. In some climes, being engaged is considered married. The incorrect marital statuses that were clearly put up for attention are concerning.
1. Being married and not listing the name of your spouse and children if any at the time of entry.
2. Being in an uncompleted divorced (without proof of a court document approving the divorce) at the time of entry and not listing the name of your spouse and children if any.
Please point out what you are sure of. I am tempted to ask you to please put up references to the cases you mentioned above where people entered as married while potentially married and were disqualified outright for it. You were the one that wrote this right?...."
In every case we are aware of here, an incorrect marital status at the time of application results in automatic disqualification"....If they were disqualified they must have been because they satisfied either of the 2 notices I put up here or there must have been something else wrong with their case like it must have been a hybrid pop up marriage but certainly not because of this minor mistake.
Please before you start pointing out things, first gather the right information because you might be creating panic where there ought not to be one.
Asides from my friend's case, I got more confirmation from a Nigerian forum which caught my attention where someone asked an immigrant Visa officer about something similar and his reply was that, "In the event she was married and still listed herself as single, she would be out-rightly disqualified. However, listing herself as married when she wasn't technically married yet is not a basis for disqualification, especially when there is a reasonable explanation. As was described, the situation/mix-up will not lead to a disqualification."
So please let's be objective when we try to help those in need here. The burden of proof in his/her case if any would be demanded would be to maybe confirm the applicant's story to justify the reason why they weren't married when they planned to get married. One way would be by looking at the child's birth date and tracking back to see if there is any truth in it or asking to see a death certificate of the deceased family member and the relationship to the applicants.
And I am not indicating anything common sense doesn't already imply. BS happens in the real world. It is only right to wait till you actually get married because jumping from "filling in Married in the original entry" to "filling in Single in the follow up form that goes to KCC" when there is no "divorce" would be "creating a problem" where there ought to be none. As the KCC would expect to see a divorce certificate/proof as opposed to a marriage certificate/proof.