The Dragon Heiress

When Lisanna Strauss comes back from Edolas, everyone treats her like royalty. Soon, Lucy Heartfilia is kicked out of Team Natsu for being "too weak". They tell her that she was only a replacement for Lisanna.
After that, everyone in Fairy Tail ignores her. The only time they acknowledge her is to shoot glares and insults at her. The only ones who weren't rude to her were:
Lisanna herself, Mirajane, Elfman, Wendy, Romeo, Levy, Cana, Juvia, The Exceeds, Gajeel, Master Makarov, Laxus, and The Raijinshuu.
Sick of it all, Lucy runs off to complete an S Class quest without telling anyone.
As expected, she dies, but is saved by a dragon who informs her of her unknown past.
Soon after she is kicked out, Natsu realized what he had done and leaves to search for her, not knowing she was "killed".
When Lucy comes back to Fairy Tail, she turns out to be the strongest in the guild.
Stronger than Gildarts.
Stronger than the master.
Will she forgive everyone or will she take sweet revenge once and for all?