Kaya is South African, she is not a normal young woman, she is a Mermaid. In addition to this detail she is Home Turf, Green Fiend, Child of the Ocean and Outgoing. To use it I recommend having all the packs updated until The Sims 4 Snowy Escape (Game Version 1.69.57.1020). It is not mandatory but I recommend that you also install the Mod WickedWhims.