What should a woman do to confirm her sincere repentance after a forbidden virtual relationship during her husband's absence?

Good deeds erase bad deeds. Therefore, a Muslim woman should increase her good deeds and draw closer to Allah. The greatest of these are observing the obligatory duties, such as prayer, wearing the legal hijab, lowering the gaze, and avoiding mixing with men. Conversing with men via the internet or phone is forbidden. She must fear Allah and not return to such actions.