One reason could be that the husband has a higher sex drive than the frequency of their sexual activities as a couple. So he resorts to masturbation to fulfill his needs. Another reason might be that he just needs some solo time for relaxation without any pressure, which is different from sexual activities with his wife.
Sometimes it could be due to a lack of communication. Maybe the husband is afraid to ask his wife for certain sexual things he likes, so he takes matters into his own hands. Or perhaps he has some specific fantasies that he thinks his wife may not be comfortable with, and thus he satisfies them through masturbation privately. Also, it could simply be a normal part of male sexual behavior that the wife just happened to catch at an inopportune time.
It could be that they are colleagues working on a project together. Maybe they are in the middle of an important business deal and need to discuss details privately.
She should immediately ask them to stop and leave the situation. Then, she needs to have a serious conversation with her husband about boundaries and respect in their relationship.
It could be for the sake of relationship growth. By feminizing her husband in certain ways, like getting him interested in home - making or nurturing activities, it can create a more balanced partnership. They can share responsibilities more evenly and understand each other's roles better.
For fun. It's a simple way to add some humor to their relationship. Maybe they are bored with the daily routine and this is a way to break the monotony.
Boredom in the relationship can also play a part. If the wife feels that her marriage has become dull and unexciting, she may be more likely to be attracted to someone else and start an affair. This can lead to the husband being in the position of a cuckold. Also, sometimes a new person enters the wife's life who offers something she feels is lacking in her marriage, like more attention, adventure or passion.
In some cases, it might be due to the husband's laid - back nature. He may not be too bothered about who makes the decisions as long as things work out well. So the wife steps in and dominates. Also, in modern society, women are more empowered and may have stronger opinions on various matters like child - rearing, home decor, etc. So they tend to dominate in these areas. For example, the wife may have a very specific vision for how the house should be decorated and she takes charge of that.
Another reason could be for the sake of the family. If the husband's debt is affecting the family's financial stability, like their ability to keep a house or send children to school, the wife may choose to pay it to safeguard the family unit. For example, if they were at risk of losing their home due to the husband's mortgage - related debt, the wife would step in to protect their family home. Also, she may want to maintain the family's reputation in the community. If the debt situation became public knowledge, it could harm their family's standing, so she pays it to keep things in order.
One reason could be that she is unhappy in the relationship herself and takes it out on him in a negative way. Maybe she expected something different from the marriage and is disappointed.
It could also be an accidental occurrence. In a story with a touch of magic or the supernatural, a wife might be experimenting with some new - found magical powers or an old family heirloom with strange powers. And due to her inexperience or some unforeseen circumstances, her husband ends up being turned into a woman. This then sets off a chain of events as they both try to reverse the transformation while also learning about each other in new ways.
There could also be issues within the relationship like unresolved conflicts. If there are continuous arguments and no proper way to resolve them, the wife may feel frustrated and look for an escape. Additionally, changes in personal values over time can lead to this situation. For instance, if she starts to value a more adventurous or carefree lifestyle which her husband doesn't provide, she might be attracted to someone who seems to offer that.