It's telling that in situations like this, Bri almost always flashes on something that Granddaddy tells her. This suggests that even though Bri spends time with her grandparents just to keep the peace, Granddaddy is enough of a trusted mentor figure to factor prominently in Bri's conscience. At this point, these new Timbs make it clear to Bri that she's not making it. She wasn't able to do the work herself to buy them, and it feels questionable that Supreme is giving them to her and inadvertently making her feel bad by doing so.