Poor possum!

She came down the chimney in the middle of the night and created havoc trying to get out.
By the time everybody was awake she had sought refuge at the top of this very high door and could not be persuaded to move, so we erected a bit of a climbing frame and waited.

At 5pm, 15 hours later, she finally came down and scrambled outside and up a large tree.
Time to block off the chimneys.