You need to call the owner and get aggressive. This is her usual pattern. There is a reason that scheduling companies don’t want to work with her. Get paid and never work for her again.

Cirrus will pay once you demand and threaten them. It's never less than 2 months. Usually, it is only once payment is demanded. Best to start demanding now rather than later, or you'll be lucky to be paid in 6 months.

This is not a normal situation in mystery shopping. It's just that this company has a history and pattern,