3 possibilities one that was something she got from being blessed two she is an alien from a gate acting like a human or three we know alex is a villain so maybe he went to the dark angels director and did something to control her if none of this then i'm just dumb
if that silver bracelet was his own power then I'm leaning towards Apollo choosing Heller, while Apollo doesn't have a direct connection to silver (that I can think of) Artemis his twin sister does. However he easily could've gotten some enslavement bracelet from a dungeon
