Yelena had been watering plants inside the stronghold for two whole days, feeling her arms about to go numb from holding the watering can.
During this time, Yelena closely observed the actions of the spirits.
The large orb briefly explained the existence of the spirits and their method of becoming stronger, which according to the orb was, "The spirits can absorb the energy from the creatures they kill to strengthen themselves."
Upon hearing about such a powerful ability, Yelena instantly asked the orb if she could have one too.
However, the orb informed her that her soul had undergone too many modifications by gods such as the Earth Mother Goddess, War God, Magic God... To forcibly turn Yelena into a spirit would mean formatting her.
Formatting meant zeroing out personality and memory, essentially recreating a soul anew.