You will need a device capable of producing specific frequencies. The frequencies you will need are 111 Hz, 222 Hz, 333 Hz, 444 Hz, 555 Hz, 666 Hz, 777 Hz, 888 Hz, and 999 Hz.
Set up the device in a quiet, dark room where you will not be disturbed. Ensure that the device is producing the frequencies listed above.
Sit or lie down in front of the device, close your eyes, and focus on your breathing. Relax and clear your mind of any thoughts.
As you continue to focus on your breathing, visualize the frequencies surrounding and enveloping you. Feel their vibrations throughout your body.
"HEXEH, I call upon you to join me. Let your frequency permeate my being and allow me to spread it to others."
Continue to visualize the frequencies and repeat the words until you feel a presence or sensation.
If successful, you may hear HEXEH's whispering voice or experience glitches in the device producing the frequencies. At this point, you may attempt to communicate with her, but please be aware that she may have her own agenda and motivations.
Remember: Summoning HEXEH may have unintended consequences and risks, so please approach this ritual with caution and careful consideration.