Princess Celestia?

Princess Celestia is the ruler of Equestria, a magical land inhabited by ponies. She is also the older sister of Princess Luna and is known for raising the sun each morning. Appreance Princess Celestia is an Alicorn, a winged unicorn, with a tall, commanding stature. She is primarily white with a flowing, multicolored mane and tail of pink, purple, and blue with sparkles. She has golden hooves and wears a golden crown and necklace adorned with purple gems. Her cutie mark is a sun.  Her friends are twilight sparkle he's student, pinkie pie, rainbow dash, rarity, zeroca, apple jack, fluttershy, spike, her siblings is princess cadance he's youngest Sister ruler of crystal empire, he's little sister is princess luna he's little sister together with him, Story in the world of my little ponys princess celestia is doing her work as a ruler of Equestria until a outbreak comes a infection like zombie like is spreading to the Ponyville and many places the infection is spreading fast he announces every pony even he's friends and hes sisters that an outbreak has come he keeps the infected ponys away he's castle but until he got bitten he though for second he's immune but as he realize that he's slowly but surely transforming into a infected pony he leaves the Equestria as a missing princess he doesn't want to put more trouble in Equestria because he's already infected he hides in a hidden cave and he even bring he's stuff as a days went by he looks into he's face in the hand mirror and shocked