This is definitely a look of a dog who has ascended the holiday hullabaloo and is definitely over it. Tell her I relate and that I would love to meet her some day because we have a lot in common. :)
Oh My....this just makes me giggle and chuckle...the look you're getting is so dang funny! I'm not quite sure it's the "I'm so over joyed" look...more like the "you can not be serious...M O M " look! I love it!!!