I think it's a known thing that corpses are usually bad to leave un-cremated or otherwise appropriately handled because they can serve as potential hosts for voidsent. So it's less her having voidsenty powers and more she trying to bring her beloved back from the dead and instead getting it possessed. I would go so far to say that it was an unintended side-effect of her attempts due to being mad from grief.
Though, it doesn't seem too difficult to open at least a small portal to the void - you have folks doing it pretty early on in the MSQ and low-level THM quests (if I recall correctly). Likely easily obtained knowledge in the right circles. Whether you can handle what comes out or not is another matter entirely.
Though, it doesn't seem too difficult to open at least a small portal to the void - you have folks doing it pretty early on in the MSQ and low-level THM quests (if I recall correctly). Likely easily obtained knowledge in the right circles. Whether you can handle what comes out or not is another matter entirely.