Dominika is a Slovak teenager, she is Valley Girl (Nisa's Wicked Perversions trait), Good and Cheerful. In order to use it you will need the mod Nisa's Wicked Perversions and 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.