<P> Dr. Amelia Shepherd (Caterina Scorsone) has moved in with Derek and Meredith, and is quickly learning the ropes at Grey Sloan Memorial Hospital . She finds out about Dr. Herman's supposedly inoperable tumor, and she thinks that she can save her . She spends hours trying to learn every single detail of the tumor . Once she thinks she has it figured out and every step of the surgery planned, she gives a lecture . During the lecture, her colleagues question her motives and wonder why her brother, the famous Dr. Derek Shepherd, isn't coming back from Washington, D.C. to help her . She assures them she knows what she's doing and that she doesn't need her brother's help . Dr. Herman's tumor quickly advances as she neglects to continue chemotherapy, so Amelia is forced to perform the surgery sooner than she'd like . Now that Dr. Herman's vision has become impaired, she must act quickly . Amelia is able to save her life, but not her vision . Dr. Herman is rendered blind and must go away to a blind school . </P> <P> Dr. April Kepner (Sarah Drew) and Dr. Jackson Avery (Jesse Williams) enjoy the exciting ride of preparing for their baby's arrival, but differences in opinions on how to raise their child create tension that proves to be more than they can handle . April wishes to raise their baby in a Christian home, but Jackson isn't a believer and thinks it's silly . During one of the ultrasounds, osteogenesis imperfecta, a lethal birth defect, is detected . Of course, the news breaks their hearts, but April wishes to carry the baby to full - term believing that abortion is a sin . Jackson wishes to abort knowing that if they carry to full - term, it will only be that much more devastating when their baby dies . They end up having a boy, named Samuel, who dies moments after birth . </P> <P> Meredith must deal with the absence of her husband after he begins to work in Washington, D.C. She doesn't understand why he wants to leave, but she knows that she doesn't want to be the reason keeping him from doing what his heart desires . Months go by without him there, which allows her to focus more on her work . She's able to accrue a successful surgery streak, but when she calls to share her success with Derek, a strange woman answers his phone . Not knowing who it is, she begins to worry that he might be cheating on her . Derek shows up at her house, unannounced, to explain . He tells Meredith that he loves her and that he can't live without her . He says that he's only going back to Washington, D.C. once more to tell them he's quitting and moving back to Seattle . However, on his way to the airport, he's severely injured in a car crash . He's rushed to a hospital, but they aren't trauma certified . Derek is eventually declared brain - dead after the neurosurgeon arrives too late . Not able to feel at home without her husband, Meredith takes off leaving only a note that she and her kids are safe . A year passes, and no one has heard from her . It turns out that she was pregnant with her third child, and she didn't know how to cope with losing her husband and being pregnant . Had it not been for her emergency trip to the hospital to give birth, Dr. Alex Karev (Justin Chambers) would have never known where to find her . He ends up bringing them all back to Seattle, but Meredith is still not able to move on . She asks Alex if she and the kids can move back into her old house, which is where Alex and his girlfriend, Dr. Jo Wilson (Camilla Luddington) are currently residing . Jo doesn't like the idea of them all sharing a place, so she buys a fixer - upper for only the two of them . </P> <P> Dr. Richard Webber (James Pickens, Jr .) and Dr. Catherine Avery (Debbie Allen) continue their on - again, off - again relationship . With differing opinions on how to be in a relationship, how to run the hospital, and who should be in charge, the two call off their wedding . However, Meredith intervenes and tells them that they are both lucky to still be alive and to cherish the fact that they can still talk to each other . Dr. Webber and Avery work out their differences and decide to get married after all . With her son as her maid of honor, the two tie the knot in the hospital's chapel . Their reception is held at Derek and Meredith house, where Meredith says she's glad this will be her last memory of the place before she moves back into her old house; Derek always wanted his home to be filled with loud, happy people . </P>

When do meredith and derek stop fighting in season 11
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