One: I am under too much pressure.
My husband is gone, my in-laws are still alive, and my parents are still alive. The support pressure of both parents is really great, and she has to maintain a good relationship with her in-laws. If the relationship is good, it is also possible. If the relationship is not good, then her life is really hard.
Second, the status of Japanese women is relatively low, causing dissatisfaction.
As we all know, Japanese women's status in the family is not high, and they are obedient to their husbands. Moreover, in some places, this idea is deeply rooted. They think that a daughter-in-law must support her in-laws. Even if you marry in-laws, others take it for granted, so this situation causes their dissatisfaction, and divorce is inevitable after her husband leaves.
Three: My own reasons.
When her husband is gone, in fact, many women will choose to remarry, because a woman's strength is really small, and she really needs someone to give her warmth and hug when she is in trouble, otherwise she can't cope with those things in life alone, so there is nothing she can do. In fact, not only Japanese women, but even in our country, many people will choose to remarry when they encounter this kind of thing.