Jessica was interviewed by Movieline, and she talked about Callie & Arizona's relationship on the show and working with Sara Ramirez. Here's are interesting snippets:

"“As the season progresses — and we’re only [filming] episode seven so far, we’re not that far into it — but then we get into Arizona’s relationship with Callie, and how that is doing, and how they’re doing, and the conflicts that are coming up with them together, and being apart, and how are they together. So, negotiating that relationship, and sort of trying to figure it out. You know, it’s Grey’s Anatomy. You have the life and death, the doctor stuff, and hopefully the very interesting trials and tribulations of their love lives.”

“Sara is amazing, and she’s incredibly grounded and a tried-and-true performer. She was on Broadway — she’s a really seasoned performer. She knows what’s she’s doing. She’s a confident, easy presence. She’s very fun, laid back, and it makes my job and her job great.”

Now I cannot wait 'til episode 7! AND.. as we know, episode 5 has some Callie & Arizona focus as well. The full article can be found here.