Ideas for 2 week rest period

I don't have personal experience with these, but I know they have those dog puzzles that you put treats into... if your dog is food driven the idea is that she'll lie down to try to get the treats out...
My guys like to play hide-n-seek with food... I let them sniff a yummy treat and then hide it somewhere for them to find... it's really funny.
I would also crate her when you are not home so that she doesn't go crazy while you aren't there.
Good luck.

Sorry to hear of Sheena's injury. 

I have alot of experience with keeping a dog quiet, as Misty had on surgery that required 10 weeks of down time and another that required 4 weeks.  She is a small dog, though, so that made it quite a bit easier, I could just carry her around if she got bored. 

I would say get every chew thing in the world, especially if they aren't things your Sheena usually gets.  Flossies, Pig Hooves, etc., all can keep a dog busy for a long time.  Misty didn't really like Kongs, so that was a waste of my money.  Some dogs like them.  Shredding kleenex was a great past time, too.  I'd sit and hand them to her one at a time and she'd shred each one down to nothing.  One box could keep her quiet for hours.  (Can you see how desperate I got).  And, I'm lucky because she likes to watch TV and I watched the schedule for any shows on the Animal Planet or Discovery that had lots of animals, especially dogs, moving and barking.  I would imagine that Sheena is allowed short leash walks?  Take lots of them.  I think it was the 10 short leash walks a day that saved us, otherwise Misty wouldn't have been able to fall asleep at bed time and the torture would have lasted 24 hours a day instead of 16. 

Hope she heals quickly.