I'd suggest she waited quite a while, or tried to get it out herself. I know from experience (got fragrance oil in my eye whilst making soap) that if you turn up in hospital with an eye injury that you're a priority. If she had presented herself right away then they would have been able to get it out and made sure there was no damage. She would have loved that bit; one of the procedures they use here includes putting something in your eye that makes the whole world look like it's in an Instagram sepia tone which is really confusing if it's only one eye.