Aww, that's so cool! You will have a great time! Plus if she gets sick so often you are right she probably doesn't get scared and just goes and does it. As for the shot I'm sure her mom will go over it w/ you and you will do just fine, assuming you even need to administer it. Good luck and enjoy your time w/ the little girl! Good practice for motherhood right? but you get to give her back.
\"As soon as you trust yourself,you will know how to live.\"
Johann Wolfgang von Goethe
\"Do not anticipate trouble, or worry about what may never happen. Keep in the sunlight.\"
Benjamin Franklin