I found the trip to Cuba unconnected with the rest of the film, not pertinent to what has come before and not congruent with the characters, their idiosyncrasies or backgrounds. The Cuban trip stems out of background reminiscences during the dying aunt sequence and, to me at least, is completely uncalled for. First world (the "she" character certainly qualifies as such, at least) traveling to Cuba seems apt to happen out of just plain tourism or out of revolution-inspired soul searching (hardly the case in the family background of the "she" character), the reasons behind "she"'s trip are inconclusive and unconnected, as I said, with everything that has come before save for the dying aunt's reflections.
Unless someone caught a different reason in the plot I overlooked ...
Unless someone caught a different reason in the plot I overlooked ...