She used to be the maid of Dana, Goddess of the Lake.
Before Dana fell into a deep sleep, she was given the task of guarding the Forest of Elves.
She has much respect for Dana. For thousands of years, she has been following Dana's instructions to guard the peace of the Forest of Elves.

Proficient in natural magic, she has no mercy for intruders who dare to disturb the forest.
If you just enter the forest with no malicious intent, you will be spared from her fury. However, all males are forbidden to enter the forest.
Someone witnessed that she attacked Garditis who tried to trespass on the forest and even disregarded her identity of High Elf to severely scold Garditis.

She takes great care of Flora, and often teaches Flora new tunes although she is not good at composing music herself.
According to Mineer's proof, it seems that someone comes to the Forest of Elves regularly to pass on new songs to Mayahuel.

Mayahuel liked a human male before but unexpectedly the one she revered most also liked this man, so she chose to quit and wish them happiness.
Yet this relationship didn't last long as the human male deserted his lover and left the forest.
Mayahuel was there to witness all so she started to hate all males and pledged that no male would be allowed to set food on Forest of Elves.