There are so many nopes here for me that I simply could not. 
 DNF @ 48%. 
 Spoilers and venting ahead. 
 Our MC hardly reacts when her mom is found dead, except to be like um where will we live? Yeah, not a great mother but still. 
 Then she goes on and on and on about how her little sister is her responsibility and her whole world and she doesn't want to be separated her and then only goes to see her in the bug house once a week?? 
 (view spoiler)[And the constant fighting and hating that suddenly evolves to sex on a car? gag. (hide spoiler)] 
 The whole thing just seemed too contrived and superficial for me.