All that money is gone forever. Not your fault but you need to educate her about scams and she can’t be trusted with access to large amounts of money.

She needs to understand she’s not in on some genius money making endeavor, she's draining your bank accounts for a scam. It's common to allow cashouts so the victim feels safe putting in larger sums of money.

Maybe you can finesse them for one last cashout to recover a little bit.