I don't think you need to transfer conditionals for the Dynaheir dialogue. After all, if you limit the mini-mod to just a small dialogue change regarding her, it is already established you romanced her in BG1. The only thing it would require is adding an extra response option (so you could still select the original responses) and a chain of reactions following that.
It's maybe six lines of extra dialogue but it would acknowledge the relationship, if briefly, and that would help the immersion immensely. We could pretend the player deals with his grief privately after that revelation. He is, after all, a man of action.