Looking for Buddhist story on Nirvana after being abused I am looking for a Buddhist story from scriptures or otherwise real life, from any tradition, where a person is mentally abused, in a sense insulted, humiliated, looked down upon, etc who achieves Nirvana or Sotapanna or anything substantial towards the direction of Nirvana. 

I found the story of Milarepa which fits my need but Milarepa apparently took revenge using black magic and did not forgive his wrong-doers, later on, he understood the uselessness of what he did and he followed Dhamma and got enlightened. 

Another story is from the Akkosa sutta but that happened with the Buddha Himself post-Nirvana. I want something with good moral of forgiveness for others, for the perpetrators.
The Therigatha might have examples of this. One I found was the verses of Sumangalamaata:


  O woman well set free! how free am I,
  How throughly free from kitchen drudgery!
  Me stained and squalid 'mong my cooking-pots 
  My brutal husband ranked as even less
  Than the sunshades he sits and weaves alway. (23)
  
  Purged now of all my former lust and hate, 
  I dwell, musing at ease beneath the shade
  Of spreading boughs–O, but 'tis well with me! (24)


Patacara is maybe another good example:


  Wailing in her woe– 'My children both are gone, and in the bush
  Dead lies my husband; on one funeral bier 
  My mother, father, and my brother burn,'
  she wandered around from that day forth in circles, and because her skirt-cloth fell from her she was given the name 'Cloak-walker.' And people, seeing her, said: 'Go, little mad-woman!' And some threw refuse at her head, some sprinkled dust, some pelted her with clods.


source

There's also the story of an old man who, after giving all his wealth to his children, is left destitute when they refuse to care for him in his old age, so he becomes a monk. I can't remember the name though.