Girl from the wrong side of the tracks

[Christen]

Am looking for a book can't remember when I red it but it's been at least a year. The girl is from the wrong side of the tracks and the hero comes from a loving rich family. The family falls in love with her and treats her like a daughter. Also the hero has a sister and the heroine and the hero sister are friends before the heroine meets the hero. It about the struggle of the heroine felling like she doesn't deserved them because of the thing that happen to her and the things she had to do to survive

[Lobstergirl, au gratin]

Christen, are you still looking for this or did you find it?

[Lobstergirl, au gratin]

No response, moving to Abandoned.