Yes put litter box outside and or a bed or blanket she sleeps on. Put it hidden next to the house where her scent will bring her. My cats do go outdoors daily but I have a tracker on them. 99% of the time they are in my yard….
This may sound weird, but, it doesn’t cost anything and is worth a shot.
❤️ May you find your way home, sweet Hiver! ❤️