Well what if when applejack And Rarity were younger Rarity fell off the side of a bridge and the Applejacks mom and dad heard her and rran to Raritys aid but while saving rarity the Couple fell on and little apple jack came and saw them fall and they died and wewe can find hints of this when the CMC get there cutiemarks and applejack says "Mom and dad would've been so proud of you" then Applebloom runs off