Tear Jerker / Ask Twixie Genies

• The Hearts and Hooves Day mini-arc.
• The "Reunion" arc of Ask Twixie Genies. Twilight, after spending the last half a year believing she would never see her friends again, finally reunites with them...only for Applejack and Rainbow Dash to do a complete 180 and turn on her, accusing her of abandoning them when none of what happened was her fault. Twilight outright tells them, tearfully, that she was scared to death of never seeing them again, that there was no way for her to get back to them on her own, and that all she ever wanted since becoming a genie was to be with her friends again. And yet, despite all this, AJ and RD still insist on being petty, hateful bitches, all because Twilight dared to not write to them when she was trapped against her will in her bottle/cave.
• Rainbow Dash has a My God, What Have I Done? reaction upon being told that Twilight couldn't write them at first...but Applejack is still furious. Why? Because she'd been worried and missing Twilight, only to find out Twilight had been ABLE to contact them but chose not to for so long, causing her worry to turn into betrayed rage. Seeing Applejack, who is normally strong willed, break down crying recounting this is rather crushing.
• Twilight's Disney Death and Zephyr's subsequent Heroic Sacrifice to undo it. Even more in the former, as Trixie discovers from the ashes of where Twilight was the ring she was going to propose with.