First of all, stop thinking about what she did to you. The lessen she taught you is priceless; you will receive cash and use a contract from now on. People like you, and I am one of them, tend to want to trust others. There’s a time and place for that; in business everyone is guilty, until proven innocent.
If the job is important to you, tell you will play, but cash before we start. (BOO to that)
The lessen was a good one, now put it away. Do not allow her to destroy your joy.
Enjoy your music, you are good at what you do, John C.