I'd check Macy's or outlet stores for clearance totes; you could find a great deal on a designer bag and get the warranty too 
Not sure what her style is, but maybe a Thirty-One bag? I have a few of those and they seem pretty rugged, although not sure about carrying heavy books every day. Maybe Abercrombie? Or Hollister? Also check out TJMaxx or Marshall's - they often get in good, quality name brand bags for much less.
When my DD was 15, she too wanted a tote vs a backpack. We got her one at American Eagle. After about a week of carrying it, she pulled out the Jansport backpack. Style was not worth the uncomfortable back pain

Not sure what her style is, but maybe a Thirty-One bag? I have a few of those and they seem pretty rugged, although not sure about carrying heavy books every day. Maybe Abercrombie? Or Hollister? Also check out TJMaxx or Marshall's - they often get in good, quality name brand bags for much less.
When my DD was 15, she too wanted a tote vs a backpack. We got her one at American Eagle. After about a week of carrying it, she pulled out the Jansport backpack. Style was not worth the uncomfortable back pain
