Nikkicole

Shortly after I applied to grad school, I left the country to work abroad for a few months. There was some miscommunication and one of my recommenders forgot to submit her letter to 2 of my programs (USF and FIU). I had inconsistent internet access, so I didn't notice the error until a few weeks later. USF was one of my top choices, but I just assumed that it was too late and I had already received acceptances from other schools. Yesterday I got an email from USF's program stating that they are missing a LOR, and that they would like to consider my application if I can get the LOR to them within a few days. I thought admission decisions had already gone out for USF. Is it normal for a school to send out emails like this? Should I even bother?