//A fascinating headcanon, but it unfortunately doesn’t jive with my vision of Gabrielle—but that doesn’t make it wrong, just not for me! =)
I’m of the opinion (and, again, just my headcanon) that Gabrielle would have done as much as possible to avoid sexual congress with the Marquis. As a man, he both disgusted her and was an object of pity and derision. This doesn’t mean she wasn’t the “proper wife” when the moment called for it—she was raised to be such—but that she lived her role out to the extent of her duties and rather little else.
And, since my personal headcanon runs along with one created by the amazing Brat Queen—that the Marquis sexually molested Lestat, I’m of the opinion that Gabrielle would have had as little to do with him as possible.
I’d also hazard to guess that, after she’d given him a handful of sons, she pretty much washed her hands of everything that came with being the Marquise d’Auvergne—she’d done her duty, hadn’t she?
I think that, as she grew older, she was more and more withdrawn and more indifferent to anyone besides Lestat. Some of this occurred early on, but the final hammer would have been the death of her daughter, the last de Lioncourt child (as insinuated by Mater in TVL).
Thank you SO much for this lovely headcanon!