You have committed a grave offense. However, since you are feeling remorseful and are determined to seek repentance, you can rest assured that Allah is All-Merciful and Forgiving as long as you are willing to turn to Him in sincere repentance.

 

As far as she is concerned, it behooves her to do the same. You should only wish her good and never bother her again.

 

For details on the procedure of repentance, please refer to the answer linked below.