Is my Husky broken?

I've had my female Husky, Bear since she was only a few months old. Apparently she is Alaskan Husky, Liberian Husky and malamute. She will be 3 in February and up until about a year ago she was totally nuts and exhibited all of the normal Husky behavior. She has calmed down so much in the Last year that it is somewhat concerning. I can't figure out if she is just super chill now or if she is depressed or something. She naps most of the time and doesn't run around as much when we go outside. Should I consider myself lucky or be concerned?