[s6e4]: Tainted Obligation

: Following the merger with Mercy West, the hospital is rife with tension as the residents compete to prove their worth to avoid being cut from the program.

The emotional core of the episode involves Meredith's estranged father, , who is admitted to Seattle Grace with advanced liver failure. While Lexie is desperate to save him, she is not a match for a transplant. This leaves Meredith with a harrowing choice: risk her own health and career to donate a portion of her liver to the man who abandoned her, or let him die. Key Plot Points [S6E4] Tainted Obligation

The title "Tainted Obligation" refers to the complex nature of family loyalty. The episode explores whether someone is owed a "second chance" simply by blood, even when they failed to provide basic care or presence during childhood. It serves as a major turning point for the relationship between Meredith and Lexie, bonding them as sisters through a shared sacrifice. : Following the merger with Mercy West, the