Sisters are tough. She'll tell you if she hates it. No filter.
We found gifts for sisters that she'll actually keep – cute clothes, good skincare, jewelry she'd pick herself, stuff for her apartment, and things related to whatever she's obsessed with this month.
Need birthday gifts for her? Christmas? Just because you're a good sibling? Got it.
She might even say "okay this is actually good." High praise from a sister.