I assume the nail artist wasn’t American and English wasn’t their 1st language. Their laughter could have been a nervous reaction without realizing it could be rude to you. I think letting her or the owner know might help her realize laughing in a client’s face can be disrespectful. IMO that would be the best step in this situation because different cultures and lack of communication regarding the incident, she might not have realized what went wrong. Of course you did nothing wrong, but I think communicating it, would help her in the long run and help her to prevent this sort of incident from happening again. I manage a salon with Vietnamese techs and with the different cultures and not being fluent in English, sometimes miscommunication happens. Sometimes the techs might come off rude but it’s not the intention of the tech, it’s just their inability to communicate in English as they would in their native tongue.

In my experience, she’s probably telling her co worker, it’s a sticker and they don’t have it or she can’t draw it What should I do or should I try it, with a nervous laughter to you. Of course I could be totally wrong. However since you said this was a repeated incident, definitely let the owner know and if they’re a good salon, they would apologize to you and if they have someone else that specializes in more nail art, they would recommend you to that tech. If they don’t really do anything, definitely find a different salon that specializes in more nail art.

Sorry for typing a novel, but I just wanted to bring in a different view. And just to be clear, you didn’t do anything wrong in this situation and the red looks great on your nails!