How can I atone for a mistake I made against my husband and religion, given that I am committed to religious duties and do not overstep the Sharia boundaries?

A married woman is entrusted with her home, and she must safeguard her husband in his absence, regarding herself and his property, as Allah Almighty says: "So righteous women are devoutly obedient, guarding in [the husband's] absence what Allah would have them guard." Not safeguarding him is a betrayal of trust and a transgression against the command of her Lord. Allah Almighty forgives all sins and accepts repentance. The conditions for repentance are: abandoning the sin, regretting it, and resolving not to return to it. If the sin involves the rights of another human being, then one must clear their liability, either by returning the right or seeking forgiveness. If doing so would result in corruption, then supplication is sufficient. Whoever has fallen into such a sin must hasten to repent and perform many good deeds. She must conceal her sin and not inform her husband or anyone else about it.