Do you NEED to let her loose at night? My two dogs are both nearly four years old and they both still sleep in crates at night in our bedroom. That way I know immediately if one of them is sick, or needs to go potty. They don't try to wake us up early. I never have to worry about what they are doing in the middle of the night and I always know exactly where they are.
Niko: American Showline GSD 4 1/2 years old
Rosa: American Muppet Dog (GSD/Border Collie mix) 5 years old