Winnie has been excellent going to bed and going into the crate without a fuss every night. We normally wouldn't hear a peep once the door shuts. Lately she has been whining for a few minutes before going quiet and the other night it was louder and went on for about 10 minutes before she fell asleep. She was overtired on that night and we put it down to that but the other nights she was just her usual tired. She doesn't do it every night. The night before she was quiet but last night there was a couple of minutes of whining . Its like she doesn't want to go to bed even though she is getting sleepy. Should I just ignore this?