When we have someone "wrapped around your finger" or "wrapped around your little finger", that person would do whatever you want. You would have dominance or complete control over them. For example, little girls sometimes have their dads wrapped around their little fingers. In other words, the dad would do whatever the little girl wishes.
"See ya when I see ya" or "see you when I see you" means that I will definitely see you sometime in the future but we have no specific date, time, or place agreed upon yet.
I hope these explanations help! Good luck and keep asking questions! :-)