From a Jain Dharma perspective, fidelity in marriage is part of living a virtuous, non-harmful life (ahimsa, satya, yama-niyama). If a wife cheats on her husband, the following points are generally emphasized in Jain teachings:

• It harms trust and the harmony of the family. Dishonesty and betrayal create social and emotional suffering for both spouses and the family.
• It can generate negative karma. Jain ethics teach that harming others or acting out of deceitful desire binds karmic consequences, which can affect this life and future lives.
• It is not about punishment by a human authority in scripture, but about the natural moral order and personal spiritual progress. The goal is to reduce suffering and cultivate right conduct (sāmāya, samyak-darshan, and related vows) rather than to inflict blame.

What a Jain household can consider doing:

• Address the situation with truthfulness and non-violence. Seek open, compassionate dialogue if both partners wish to repair the relationship.
• Take responsibility for one’s own actions and practice forgiveness where possible, while also setting healthy boundaries.
• Seek support to prevent future harm (e.g., counseling, adherence to vows, and strengthening spiritual practice).
• For spiritual progress, everyone is encouraged to reflect on actions, repent if needed, and strive to follow right conduct more consistently.

If you’d like, I can share more on how Jain vows and duties apply to householders and how to approach such situations in a way that aligns with Jain ethics.