The moment that anyone was left without Life Energy was when they lost a lot of their main combat potential that could be used against Spirits.
Careful management over the usage of abilities and spells was crucial in battles especially when working alone since there was nobody else there to provide extra support using their reserves of Life Energy.
If there were more enemies in an area and anyone was alone in such a condition then they would have no choice but to retreat if they wanted to preserve their lives especially if they had nothing else to rely on that could aid them in such a situation.
Ash kept moving around the room as she kept making changes in the direction she moved.
Her hands kept moving a little clumsily as she kept muttering to herself trying to maintain the rhythm properly without making a mistake.