In all fairness, the only Trek she enjoys is/are the new movies.
IV seems to be the one with the most mainstream, non-Trek fan appeal
I’d consider myself a casual more mainstream Trek fan and I really dislike IV.
I think the point is that most everyone, even non Trek fans, as least know about The Voyage Home in so much as many simply know it as “the one with the whales.” Therefore it is likely the most mainstream-ly accepted of the Prime Kirk movies.
Of the Prime movies, IV is my favorite, then VI, then II. The big detractor for Wrath of Khan for me was the bug-in-the-ear scene. I really… that scene makes me cringe and I usually skip it. I’ve seen Wrath of Khan umpteenkabillion times, but that scene alone makes it not my favorite.