How can a betrothed woman return to her previous obedience after having faltered, and will her repentance for touching her fiancé be accepted?

Among the things that help one persevere in obedience are: seeking assistance from Allah and supplicating to Him, associating with righteous women, studying the books of worshippers and ascetics, striving against the self in obedience, and remembering the great reward. As for a suitor touching his fiancée before the marriage contract, it is forbidden. The expiation for unlawful touching and looking is sincere repentance to Allah.