You should keep it to yourself and respect her privacy. Pretend you never heard it.
That's really an awkward situation. First, you should try to stay calm. Maybe it was a huge mistake on her part. You could send her a message saying something like 'Mom, I think you sent me the wrong thing by accident' to let her know what happened without making it more embarrassing.
The best thing to do is to pretend you didn't hear it. It's a private matter and you should respect her privacy. Just keep it to yourself and try not to think about it too much.
Apologize immediately. Let her know it was an accident and that you respect her privacy. Assure her that you won't let it happen again.
You should stop right away and apologize. Acknowledge that you invaded her privacy even if it was unintentional. Have an open and honest conversation with her. Listen to her thoughts and feelings without interrupting. Assure her that you will take steps to prevent any such accidental invasions in the future, like being more careful with shared devices or files.
No, it's not appropriate at all. Everyone has the right to privacy, and your mother's situation should be respected. Nude tanning is a personal and private matter, and spreading such a story violates her privacy and can cause great harm to her and your family's reputation.
If you are really bothered by it, you might consider having a very general conversation with your mom about respecting personal space and privacy in the house, but without specifically mentioning the thong. This way, both of you can be more aware of each other's boundaries without getting into an awkward situation.
Finding such pictures is extremely distressing. If you feel unable to talk to your mother directly, you might consider speaking to a counselor or a therapist. They are trained to handle sensitive situations and can give you objective advice. Remember, your mother's privacy and dignity are important, and you need to handle this situation with the utmost care and respect.
Apologize immediately. Let her know that it was an accident and that you are sorry for the intrusion. Then, respect her privacy from then on and make sure it never happens again.
First of all, stay calm. Try to quickly send a follow - up message saying it was a huge mistake, like 'Mom, I'm so sorry, that was sent by accident. Please don't look at it.' Then you might need to have an honest conversation with her, admit your carelessness and assure her it won't happen again.
This is a very serious situation. First, you need to have an open and honest conversation with your wife to understand her motives and what really happened. Maybe there was some misunderstanding.