My Sole aim is to save this marriage
That, in a nutshell - is the problem.
Where in 'my sole aim is to save the marriage' is : hope for her long term happiness, care for her self-esteem, care for her mental health, compassion for her suffering, guidance to prevent things going wrong, and guidance for when things go wrong? You obviously claim to be Christian, yet your writings go against principles of love & caring.
You apparently think 'wishing everything goes well' is enough to make it so. What answer do you have if things don't go so well? (and don't ignore this, as you have been completely doing up until now), and she ends up getting abused again? What if it's your advice that puts her back in the cycle of abuse? After telling her to go back to her marriage, did you give her any guidance as to making sure it doesn't slip back into abuse? Or is saving the marriage the SOLE thing you care about?
Coming from a good heart that can keep a woman in an abusive marriage. Do you see the problem with caring solely about saving a marriage that ended because of abuse (without your knowledge of genuine remorse, which isn't possible to tell from the writing - but my guess is not)...and blessing everyone?
So yes : Let Lord give Wisdom