The sight that was caught within the eyes of Rarity made it impossible to resist her sisterly feelings. Even though the two differed almost literally day and night from each other in personality, even though they took the blood from below the other's hooves, they still loved the each other as much as they loved their parents. The elder mare continued to hum some tunes while she walked closer to her sister and tucked her in a bit more comfortable. The humming eventually died down as her lips moved over to the filly's forehead and give a kiss upon it. A kiss as only a sister could do that.