So luggage is a great idea in general but something I don't think she quite needs yet. BUT, she could really use a new overnight bag type thing. What do your girls use for a "cool" bag for overnights?
DD still has a pink suitcase monogrammed with her name that she got years ago...we use it for family trips but obviously she doesn't want to use that with friends.
My sister has a Vera Bradley Weekender duffel that seems to pack well. They do come in solid color not just the flowery prints if that is what you prefer. I do not know the teen crowd though!
Her aesthetic is “trying to fit in”, lol. Is that “basic?” She isn’t particularly sporty; more artsy/vintage. I actually think she would like Vera Bradley in a floral but not sure if that’s uncool!
Sorry about the link. This is the one my teen uses. A floral VB would be way too flashy/specific for her. She's confident but likes to blend in as well.