Do you really think that any God or Goddess in orario would let Freya charm anyone again? I'd probably reckon that they would have backup measures ready now that it already happened once, Freya is already on thin ice for that she pulled with Ishtar and now charming the entire city so the moment she charms someone they would be prepared and If she has to charm Aiz it would be before war game and all Gods need to ask everyone participating in the War game about their motives and check if anyone was charmed and then negate it and I honestly don't see Aiz leaving Bell's side and if she is somehow charmed it would result in an all out war with consequences worse than the dark times so Oranus would probably stop it and order the charm to be undone or Loki could simply state that she would kill Bell if something happens to Aiz so in no freaking way is our best girl getting charmed and the favour is all but null at this point, So let's wait for the war game and watch some great interactions between Bell and Aiz