8GB RAM is not enough for a visual design student.Your main options with a large screen are all good ones.
The choice depends on your budget and how high do you think the chances are of her losing or breaking the MacBook.
1. A new base M2 MacBook Air 15" is $1,400. With the education discount it's around $1,260. It has lower 8GB RAM, but she probably won't notice any difference. It will last at least 5 years, maybe 7. Extra benefit is that it's lighter.
2. A used 2019 MacBook Pro 16" i9/i7 16/32GB for $1,000 or ideally $900 is also great. A capable machine and will easily last her around 3-4 years.
Having laid it all out like this, it's clear that the base 15" MacBook Air with the education discount is a better long-term value.