>>109743115Make it so that there's actually a hidden realm called Wonderland and she originally was from there but because of X reason, she ended up on Earth, got amnesia and forgot all about it, which led up to her current life where she ended up with the 80 year old dude, while being obsessed about alice in wonderland-related things.
Some stuff happens and she recalls everything, opens a portal to Wonderland, establishes herself as the rightful ruler, and starts an invasion of Earth using Wonderlandian troops
There, main villain material. She's only stopped when it's revealed that the restoration of her memories was incomplete and the rest of her memories convinces her to stop the invasion and return peacefully to Wonderland with the Wonderlandians, but not before fixing all the damage.