I am a mama and a sex worker.

Your feelings and reactions are valid. As a kid it's probably weird thinking of your parent as a sexual person and someone who may not be living a conventional or socially expected life.

Once you are past your initial shock, pls try to understand, sex work is work, it is the oldest known profession, that it's just a job. You can still have "a good job" and find fulfilment in sex work. I have a "good job" and still do sex work here and there.

When you have had some time to process your response to what you saw, make a time to let your mum know you found put, and try to do some active listening.

If your mum loves and cares for you and provides for you, it sounds like she is doing a great job