<Tr> <Th> 125 </Th> <Td> 14 </Td> <Td> "Stay" </Td> <Td> Chris Grismer </Td> <Td> Brian Young & Caroline Dries </Td> <Td> February 12, 2015 (2015 - 02 - 12) </Td> <Td> 2J7864 </Td> <Td> 1.52 </Td> </Tr> <Tr> <Td_colspan="8"> With help from Elena and Damon, Jeremy graduates high school months earlier and is leaving town to go to art school . Caroline, on the other hand has Stefan help her surprise her mother with a vacation while the sheriff is with Damon attempting to solve an old unsolved case: the Gilberts' accident . Elena and Jeremy get stoned together while bonding and talking about their old memories . Matt is still being blackmailed by Enzo, but he is starting to develop feelings for Sarah . Enzo calls Matt and threatens to kill Jeremy, who he has pinned down, unless Matt takes Sarah to a certain tunnel . Matt reluctantly goes on a walk with Sarah to the tunnel, and Enzo purposely hits Matt with a car . While Sarah panics, Enzo tells her to stay calm and gives Matt some of his blood . As Jeremy leaves, it is revealed that he lied and instead of going to art school, he is going to go hunt vampires and Alaric is the only one who knows about it . Meanwhile, Liz realizes that the events surrounding the Gilberts' accident were natural and that she had been hoping for a supernatural reason so she could have someone to blame . Stefan and Caroline are setting up Liz's room together and the two of them kiss on the porch . Liz's condition rapidly deteriorates and she has to go back to the hospital, where she lies unconscious . Caroline rushes to the hospital and is upset because she didn't get to say goodbye, but Stefan helps her by suggesting that she goes inside her mom's mind, which is what she does and with that the Sheriff dies . </Td> </Tr> <Tr> <Th> 126 </Th> <Td> 15 </Td> <Td> "Let Her Go" </Td> <Td> Julie Plec </Td> <Td> Julie Plec </Td> <Td> February 19, 2015 (2015 - 02 - 19) </Td> <Td> 2J7865 </Td> <Td> 1.41 </Td> </Tr> <Tr> <Td_colspan="8"> Bonnie has her magic back thanks to Damon's message and is planning to return home that night . Kai is dying because he merged with Luke instead of Jo . He tells Jo that unless she gives him her magic, they and the rest of the coven will die and the prison worlds will collapse . Meanwhile, Damon is struggling to write Liz a eulogy and is having flashbacks to his mother's funeral . He also tells Caroline that it will only get harder for her later after everyone expects her to move on . Before Liz's funeral, Caroline tries to ask Stefan how he feels about her, but he responds by saying that he'll talk to her about it later . The funeral takes place: Damon gives the eulogy, Caroline sings, and the police honor Liz one last time . The moving display prompts Matt to get an application to join the police for both himself and Tyler, who has been drinking heavily since his breakup with Liv . Jo decides to give Kai her magic, and as this is taking place, Bonnie's prison world shifts in and out of the Salvatore home in 1903, when the aurora borealis was taking place . Right before she is about to return home, she sees a woman who asks her who she is, but before she can learn more, she returns to the normal world . Kai feels healthy after receiving Jo's magic, but before he leaves, he tells her that she is pregnant . Alaric proposes to her, telling her that he had already been planning to propose before the news, and she accepts . After Liz's funeral, Caroline returns home, but Elena follows her and confronts her after realizing that Caroline plans to turn off her humanity to stop her pain and prevent what Damon warned her about . Caroline decides to go through with it anyway and breaks Elena's neck . Stefan realizes that what he feels for Caroline could turn into something deeper and goes to her house, but he sees Elena lying on the ground . Damon reunites with Bonnie, and when Bonnie shows him the video she accidentally took while she was escaping, Damon realizes that the woman Bonnie saw was his mother . </Td> </Tr>

What episode in season 6 of vampire diaries does bonnie come back
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