Change Of Heart?

'The dark clouds covered every inch of sky, rain poured down as she trudged through the forest, her cloak soaked through and her boots made a quenching sound with each step she took. She got to the edge of the dense forest and saw what she had been looking for for what seemed like decades, and with an evil grin she thought, 'finally, after all these years I finally found you, watch out old man, the past is coming to get you',
after that, she started walking down the hill, heading to her most hated enemy, Master Makarov.

Lydia has a dangerous secret, a troubled past and she will stop at nothing to get revenge but that was before she meet the Fairy Tail Guild. The members of the guild, partially Lucy, saw that her heart was filled with grief and anger, they didn't understand but decided to help her, it won't be easy to change her heart, after all what has been done can never be erased...