So far Wavie has been very annoyed with Samantha Rose, according to the text Sam has been telling her to do chores that didn’t make Sam any more caring towards her. Then she finally relies that no matter how much she did for Sam she would never care. near the end of these chapters she is starting to feel optimistic but curious about her supposedly dead father I think this b\c Sam gave her a checkbook with her moms payments from Walmart but then she starts finding paychecks that had 100$ payments from a guy named Bowman around her birthday and Christmas and so she thought that if her mom lied to her about her ant maybe my dad is still alive?
I agree with you that Samantha Rose does make Waive do hard chores and is not very caring to her because Samantha Rose made her thoroughly clean the kitchen.
I agree that she is curious about her father because in chapter 10 she asked Camille to look up his name.