DiceVR
I highly doubt the queen wants the card otherwise she would've sought it out a long time ago shes probably on the level of a royal already but it is a body snatcher so it's very elusive even for her. its either going to the girl she can probably take the card due to her large amount of mana, the queen of undeath or maybe one of the wisp.
Hmmm~ I wonder if the girl was actually cursed rather than actually an Undead. Like, a curse that flips life and death, and this girl is actually an amazing life mage which caused her to keep her memories when she got flipped from living to undead. (Or maybe, another isekai ahhhhh) Another one is that her unique skill is memory related like Eiro or maybe immortality itself, so that even if her body dies, she'll live as an undead?