I don't think either one of you are ready to be playing in this Lifestyle.
You feel the need to "test" her, you don't trust her and she is making up nonsense stories to try to keep you from getting pissed off at her actions.
This lifestyle is about total trust and honesty between partners before anything else and you two don't have that at this point.
Back off, take a break and talk about what happened without pointing fingers and making a major deal out of it. You both messed up.
Once you really have the trust and communication that you need then venture back in slowly.
Good luck to you.