Ruby likes
Medium light
She likes a spot that’s bright but out of the path of direct sunlight, so ideally not right next to a window.
Regular watering
She likes lightly moist soil. Check her weekly and water if the top two inches of soil feel dry. Water less in winter.
Humidity
Moist air helps keep her leaves healthy. Give her a mist every couple of days or give her a home in a bright bathroom.