Hm, I haven't heard about girls dying from the injections, but there are some side effects. You do not have to rush to get the injection. You can do more research, then pay for the vaccine later. (I assume the school is just offering the injections if the parents pay a fee - but I may be wrong).
Have you go to the website for the manufacturer of the vaccine? Have you searched for complications of that vaccine? That's what I would do if I were considering the vaccine for myself or my daughter.