Periodically, the Princess leaves to Tartarus to rest undisturbed, as suggested by her stress counselor.

After falling asleep and having her egg timer wake her up from her extended lunch in the fiery landscape, she flies back out only to discover a voice.

The voice eludes her until she becomes concerned. Once It was found, she decides to contact Twilight for some friendly help.

A gift is bestowed from birth to a pony. This is his or her True Name.
She was given a name that would sunder her life.

No pony is perfect, it is a fact. Even an alicorn cannot account for
everything they encounter. When a bag lost to the time is sold,
it ruins fate, or perhaps fate was the cause..

Rotting.