>>150973664
The usual AT world and Fionna world are meant to be separate; Huntress ditching a universe just to get genderbent pussy would go against many of the messages they laid out this season.
Huntress is also trying to save Finn, meaning she has to go back eventually. And she's not gonna go back, save him, and then leave her home dimension permanently. If she ever has that in mind, the plot will treat it as a bad thing and as sad cope.
Fionna is also in a love triangle this season with two boys AND a female Fern who brings in the awkward "ex of your ex" dynamic, I really don't think she's emotionally capable of handling all that AND having a crush on cool leaf lady.