I've always loved Toby and Olivia, and hoped that one day they'd realize how they were made for each other and needed to get married already, but I can clearly see why they would kill her off. She was slowly becoming nothing to the show; only a person that Toby went to see for some medical tests, or had drinks with. I'm glad how well this episode was written, and how Olivia ended at her best.
It took me by complete surprise, and when I realized what was going to happened I started bawling my eyes out and wasn't able to finish the episode for another two hours.
I think this type of episode was a good change from the typical, "oh, you cheated on me/stole from me/i want your insurance" cases.
This episode was one of the better episode of this season, I felt that the plot was maybe a 7.5-8, but due to the acting, chemistry, and how well they managed to kill Olivia off, it deserves 8.5.