Cali's attempt at removing the invading piece of metal didn't go her way. Too much blood - her hands kept slipping. It certainly didn't help things. With each slid, the metal moved about, opening the wound even more.
GM: Cali now takes a -3 to all skill checks.
You can make a Treaty Injury check to try to remove it again. If it fails (DC13), you can make a DC7 Endurance check to yank the piece out painfully and crudely - however doing so will result in a +5 to the DC to patch up the wound due to heavier bleeding.
You can also fight through the pain and make a mechanics check to try to pilot the Starfighter's singed remains somewhere.