If Romi helping Gia out with starting the clothes bank is public knowledge then a cool little side event might be to have Vina tell Peta that Peta's mom is super cool, and complain that her own mom wouldn't/won't use her own wealth for that kind of thing. It depends on what direction you want to take Vina's character though, she doesn't really have an established personality yet.
Edit: In general, based on the one scene where we see her it might make sense for Vina to be somewhat envious of Peta and her relationship with her mother. We know that Vina really wants to be a cheerleader (like Peta), we know that she doesn't feel supported by her mother, and we know that her mother disapproves of how she dresses. It seems quite easy to imagine that she'd look to the cheer captain and her supportive mother as a model for how she wishes her relationship with her own mother could be.