Testing Time For Owen And Cristina

A word from Kevin McKidd on what's coming up on Grey's from an interview with About.com:

Q: You have some pivotal episodes coming up on Grey's Anatomy, what can you tell us about them?
Kevin: "It's a testing time for Owen and Cristina. They've worked so hard to get where they are and just when they think they're hitting solid ground, stuff happens in TV shows and their faith in each other is going to be tested. I personally hope they're going to pull through it because I think they have a real magic together."

Q: A woman named Teddy (played by Kim Raver) from Owen's past is coming to Seattle Grace -- does Owen bring her in so Cristina will finally have a mentor?
Kevin: "I think Owen felt like Cristina dealt with so much over the last year with his problems and the PTSD (post-traumatic stress disorder), yet he kind of feels she doesn't need any help because she's so tough, but he realizes she needs help professionally. She's not being given the direction she needs and she's so talented, but what happens to hugely talented people when they flounder is they become distracted. He makes an attempt to try and refocus her and give her all she needs professionally. Ironically, that might be the thing that jeopardizes their love for each other."