Not much

A great fight breaks out. With your elevated hight, long spear and draconic appendages you have quite the advantage and are able to take down many men and women both guards and knight. Some of the prospective knights cower in the corner. You get a few rally to your side. Some heard the way the prince looked down on them others heard that you were the sister to the princess defending her honour.

However, in the end, you are a few in an entire castle of people who want to kill you. You and your followers are eventually overwhelmed and killed. The king rewards the guard who finally killed you with a knighthood and vast sum of money which he used to buy the best gear and weaponry. He went on to slay your mother and claim your sister as his princess and become the next king.