One sign could be a change in her appearance. If she suddenly starts dressing up more than usual or paying extra attention to her looks when she didn't before. Another sign is being secretive with her phone. She might be overly protective of it, change passwords, or quickly turn it off when you come near.
Once there was a woman named Lily. She was married to Mark. Lily started to have secret meetings with an old acquaintance from her college days. She would lie to Mark about where she was going, saying it was work - related. One day, Mark noticed she was overly protective of her phone. When he finally checked it while she was in the shower, he found text messages that revealed her affair. He was heartbroken and they ended up getting a divorce.
No, it is not appropriate at all. Such topics are very private and often fall into the realm of vulgar and inappropriate content that should not be shared publicly.
One way could be to expose her actions to her family and friends. Let them know what she has done in a calm and collected manner. This can make her face the consequences of her actions within her social circle.
Rather than a real cheating story, here is a story of trust regained. A wife had some secret meetings that made her husband worried. But those meetings were actually her preparing a big surprise for their anniversary. She was meeting with party planners and designers. In the end, the husband realized his mistake of doubting her and they had a wonderful anniversary celebration.
In a small town, a married woman named Grace got attracted to a charming stranger who visited the town. She started to lie to her husband about her whereabouts to meet this man. She would say she was at the library or helping a friend when in fact she was with the stranger. Her husband became suspicious when she started dressing up more often and being less interested in their family time. When he finally discovered the truth, their relationship was on the verge of collapse and they had to go through a lot of counseling to try to fix things.
Here's a story. A black wife, Jane, had been married for a few years. Her husband, Mark, worked long hours. Jane became attracted to a neighbor, David. She began to cheat on Mark. She would make up excuses to go out and be with David. When Mark started to suspect, he hired a private investigator. The investigator caught Jane and David together, and it led to a big fight between Mark and Jane.
Once there was a woman named Lily. She was married to a kind man, Tom. But she got involved with a colleague at work. After a while, she realized how wrong she was. She felt deep remorse as she saw the pain in Tom's eyes when he suspected something was amiss. She finally confessed. Tom was heartbroken, but Lily was determined to make it up. She cut off all contact with the other man and started going to counseling to fix their relationship.