I’m older than that; I’m talking 1958-59 or thereabouts.
Your wife’s aunt sounds a very admirable person.
Likewise your advice to her was also spot on…without knowing the details its hard to say whether or nor she would have got an annulment 2nd time around but as you say chances were good given that the bar was set very high up until the 70s. & 80s so as to stop the “plague”. It didn’t work of course because the causes are societal not personal and so beyond the power of the Church to stop simply by disciplinary measures.
However, if she had come to the conscience view that her first marriage was valid (even if it objectively was not for reasons outside of her control) then her course of action is the only one possible before God regardless of the liberties possibly allowed by AL (or more relaxed tribunals).
It is unfortunate such active loyal and graced Catholics are denied the food for the journey that Communion is meant to provide - many others in her position are not so strong.
The priest who gave this advice was talking about civil divorce, which from the Catholic standpoint is a de facto separation
If you go into the matter I believe you will find you are mistaken on this…it is probably your interpretation of what the priest was saying rather than what he actually would have said - especially in the 1950s when the Church’s teaching on divorce was much more clearly understood than it is today.
While I understand what you are saying a Catholic choosing Civil Divorce and one choosing Separation from bed and board in the face of a failed marriage are two very different choices. One is an objectively immoral abiding counter witness to Jesus’s teaching on marriage - the other is not. That teaching has not changed though the widespread lay acceptance of civil divorce as normative in the face of a dysfunctional marriage has obscured this underlying reality. The Church has in more recent times accepted that there can be good reasons for tolerating this disorder (eg preserving assets of the abandoned victim and the children) - a complete reversal of the attitudes present even in 1917 Canon Law (only abrogated in 1983) where civil divorce by a Catholic was abhorred and considered completely illicit. The current CCC says there are situations when choosing civil divorce can be tolerated and does not constitute a “moral offence.”
While lay readers often interpret that to mean it is no longer objectively immoral it would seem that is not correct given traditional teaching and the presence of the word “tolerated”. It would therefore more liokely mean “not personally culpably immoral” rather than “not objectively immoral”.
It is just as objectively disordered as a civil remarriage, though obviously not so grave.