Living in Shadow: The Princess of the Sun as she Appears to the Moon · 6:49pm May 23rd, 2017
Celestia is the mother to Equestria, which makes how terrible she is at it incredibly ironic.
She cares for everypony, on a surprisingly personal level. But, there's still this... disconnect. She cares for ponies, but she can't readily relate to them or understand them. In the past, many simple attributed this to her role as Princess, declaring her to be above the common pony. In truth, she has always been like this.