Anya is Russian and also from Sanskrit meaning unstoppable. Believe me, if it's a girl it'll be a whirlwind from the movements in the womb!
Aine is nice but a completely different name and we aren't Irish so no one will be able to pronounce it here! I don't think there's an Anglicism for it apart from Anna.
Gwennan, I hear you but it's not Ann I'd like to name her or any derivative. Anya is closer to Anna and a little more interesting we think?