Hey Winston, you will need to contact Facebook support. Go back to business settings, click help in the bottom left and see if you have the ability to start chat

Hi @Winston Richter you need to add "People" to your business manager as an Admin. When in your BM in the left menu click People, then click add, place in their email address and follow the prompts to give them access to the business manager.

@Winston Richter yes it is as long as both accounts have two factor authenticator setup so they can't be hacked

If you have the account back, definitely new password 2fa, payments etc. Check that someone has changed the email or phone number. Not your fault, this can happen to anyone as they target lists of people at a time to find the weakest. Just do you best to get the account back up and running

Is this the facebook page? If so, the page is not running any active ads, so it is hard to tell whether she is running ads on the page or her personal account. I would need your screenshot to show the whole screen to see the left hand menus etc

@Dima Whebi it is hard to confirm whether it is a business account but it does like it.