
Sorry you lost 2 of your chickens.
I would try to find one hen to keep her compony for the time being*. Preferably about the same size and friendliness.
You don’t need to separate the hens for long if you are sure you bought a healthy hen. Integration of two single hens should be easy if you have 2 feed stations and enough space.
That said. Do make a safe run for at least 2 hens asap. Don’t put them in a small coop without outdoor space where the can go from morning till sunset.
After this you can start to think about a future flock. Do you ever want to free range again? How many chickens do you want in the future? Did you ever consider to add a rooster? Let a broody hen hatch chicks?
*If it takes some time to find a ‘roommate’, keep her company yourself as much as you can. Maybe bring her in (a part of) the house for a while, daily. Where you can easily clean the floor.
Other pets might help too if they can be trusted with your hen.
