If she married Trump before entering the church, it may clarify her marriage situation with Trump vis a vis the church. In either case we should pray for her. She seems like a sincere person, unlike many Trump is surrounded by.

After Amoris there is nothing to be said of her marital Status.

Melania Trump may be a Catholic, but in an adulterous union with a Protestant.

It's too bad Mr Trump didn't meet Pope Benedict XVI. Here is a memorable tweet after partial abdication (not resignation):
"The Pope should not have resigned—he should have lived it out. It hurts him, it hurts the church..."