Rabbit’s Foot Fern
I have had my rabbit's foot fern for more than 25 years. We moved from New England [where there were no growing issues, east window, regular watering, not much misting, no drafts] to North Carolina. My poor plant lost all its fronds; it has taken me months to figure out where all the drafts were coming from, and how to close them up and still have a functioning HVAC system. The fronds are now coming back, but the first two stems turned brittle and fell off the rhizome before the frond actually opened to its delicate coverage. I don't want to lose the rest of them. The plant is in an east window, gets morning light from dawn until noonish, depending on time of year. I keep the soil moist, and mist nearly every day. Thank you.
If it did grow a frond but dropped it, you may want to refresh yourself on the care.
Check the condition of the rhizomes. Remove any that have died.