Ours takes herself off to bed around 8.30 after doing the rounds to check if anyone wants to come to bed with her. She then trots off.
We get her up again when we go to bed about 10.30 ish for a last pee, when she likes to sniff a few twigs on the hedge across the road,stand still anD sniff the air deeply, then find a stick to take to bed with her.