[And that's the one question Cassandra didn't want to answer. But she does.]

Awakening is when a warrior loses control over her power, either by using too much of it at once or by slowly losing the ability to control it over time. Either of those is enough to force a change, although the latter is a much slower process.

...The power we wield is normally called yoma energy. Because they create us by implanting yoma flesh in us.

[And Newt is undoubtedly smart enough to piece all of these details together and get "Awakened Being."]