It's depend on what she like. I like having a lot of choices for playing, so I would recommend :
For family gameplay : High School Years (go well with Discover University and Parenthood) / Cats & Dogs (animals + vet clinic) / Cottage living (animals + gardening + canning + cross-stitch).
For fantasy stuff : Vampires (skills tree + aspirations + gothic BB) / Realms of Magic (skill tree + aspirations + art nouveau/art & craft BB + spellcasters world and ''magic school'') / Paranormal (go well with RoM / spirits and paranormal investigator career)/ Werewolfs (skill tree + aspirations + grungy BB) / Island living (mermaids + summer vibes + polynesian BB) / Get to Work (aliens + 3 active careers + retails (Can do a lot like bookstore, gallery (painting/photography), clothing, furnitures, electronics, bakery, flower shop (the flower arranging that come with Seasons), crafts shop (knitting, cross-stitch), selling collectibles like grocery/fish market), paranormal/witchy shop, etc.).
Others : Tiny living (It's fun to find creative way to build tiny.)