I've always found it interesting that people think there are different rules between someone you've been in a long term relationship with/are engaged to, and someone you're married to. Why was it ok that her long term boyfriend/fiance didn't know what she was doing, but now it's wrong? The emotional effect it would have on the relationship would be the same. If you're worried about it from a "what will society think" standpoint, I have some bad news for your re: what society thinks about sex workers.....
I wanna echo what everyone else has said, that she probably is giving you the camgirl rundown of her relationship, and that a lot of partners don't need to know every detail of what we do at work, same as any other job. Also, you have probably known quite a few married camgirls, this is just the first one who is upfront in telling you she's married.
As a note (not sure if you do this outside of the cam world) many people find unsolicited advice off putting, or even downright rude. I understand it's well meaning, but it's not always the right thing to do! While she is on cam, she probably wants to earn money, get into the vibe, have a nice time - not have an in depth discussion on the ethics of her relationship. If she has shared with you that she's recently married, that means she's excited about it, so celebrate with her! If you can't, time to move on. Different strokes for different folks ✌️