What it means is, when she sat in a restaurant in years to come, 10 years to come, 15 years to come, or she's on the beach, every so often she's going to start rubbing her skin, and out of there will come a piece of that shrapnel.
Maksudnya, saat dia duduk di rumah makan di masa mendatang, 10 tahun atau 15 tahun kemudian, atau saat dia berada di pantai, seringkali dia akan menggaruk kulitnya. Kemudian potongan tubuh tersebut akan berjatuhan.