For a blessing, it seems the twins are largely absent from 6.1's MSQ despite that meaning that Garlemald will not resurface in the main story again till August or September at the earliest. In any case, there was little opportunity for dialogue with Venat after she quite literally committed "the original sin" of FFXIV's world by sundering all life, instead we got 2 cutscenes pre and post-trial that felt quite rushed. The one to even remotely attempt to address the issue was Y'shtola, even then those lines were delivered quite weakly and Hydaelyn's response wasn't a sufficiently genuine acknowledgement of the wrong she did.

If there was any moment for her to cry, it should have been then and there when she talked about the sundering, possibly remembering the lives and people she destroyed in pursuit of her messianic dream.