First Eggs! But rogue chicken...

[tnsred]

Our girls were hatched in late March and we just got our first eggs this week! So far it appears that only one is laying, but I hope the others will catch up soon! Soooo exciting!

However, I need some advice. One of our chickens (out of 5 total) won't go into the coop for the night anymore! She's been roosting in a tree near the coop. Any thoughts on her behavior?

 

[what did I do]

Option 1: I'd pluck her out of the tree a d put her in the coop.
2: You can go out at the time of roosting and put a treat in the coop to get her to go in. Lock the door as soon as she is in.
3: lock the chickens in the coop for 2 nights and one day to remind her where she is supposed to roost.