You are right. It would open a can of worms.
I would assume the Prophet Joseph Smith would have the option of claiming her in the Celestial Kingdom. If he didn’t, then I suppose Prophet Brigham Young would be next in line, if he didn’t call her new name through the veil, then I suppose her first and legally married husband Henry Jacobs would have option to her.
But of course this hasn’t been hashed out in Mormon Doctrine. It is no different than if I am sealed to my husband, and my children are sealed to me, will they my daughters live in eternity with my husband and I, along with our parents and our in-laws, or will my daughters live with their husband’s parents, in-laws and cousins . . ad infinitum. Those questions cannot be answered.