Well, I suspect that it's partly because by refusing to hand over the ring earlier, she's aware she might have brought its curse on herself. (After all, she was fully briefed on its disastrous history by Wotan two operas earlier.) She kept it as a symbol of Siegfried's love, so losing Siegfried's love seems like a curse-like retribution.
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Date: 2018-08-29 02:40 pm (UTC)