how to get hen to roost in coup instead of trees

[oceanbird]

I have a new hen that I am trying to integrate into my flock of RIR. She was fine for a few days but now instead of going to the coup at night she is sleeping in the trees. She is so high up we can't reach her to put her in the coup. She is also a bit wild- I can't pick her up or catch her in the day. She is feeding with the chickens in the day and they seem to be getting along. Help what should I do?

 

[Wolf-Kim]

Do you let your flock free-range at all? How does she feed with the flock? The best thing would be get her in the coop and lock her in there for about a week..

-Kim