Lucys' life in Fairy Tail was the best they treated her nicely and the were caring. The once Team Nastu came back from Edolas they brought with them the real Lissana so they celebrated the return of Lissana, then things took for a turn. Nastu told Lucy she was kicked out of team Nastu and Lissana started making horrible lies about Lucy hurting her so everyone started treating Lucy bad. She decided to leave and since then her journey begins I do not own any of the characters from Fairy Tail.