What's Up With Izzie?

Just watched the Grey's Anatomy from Thursday. They have got to snap Izzie out of this funk or give her less airtime, she drains the energy out of the scene with her depression. I get that only a few days passed on the show and a few months passed for us, but give me a break, she was "in like", not in love, since she'd never seen him once to my knowledge outside of the walls of that hospital. This is becoming obvious, hopefully even to her, since she didn't know Denny as well as she thought she did with the whole parents situation. And they are taking no steps to make her get over the death, like a funeral. Plus, I think she's been in the same outfit since getting up from the bathroom floor. What's up with that?

Also, why the hell are these people still interns? You're only an intern for one year, your fourth year of med school, and then you go into residency. We're on the third freakin season of this show, and they're still interns? Exactly how slow does time move in Grey's world?