Seems like everyone loves the tortoiseshell color, if your kitten is anything like her she is really loving only when she wants it.
What seems to make Sissy stand out is that several of her toes are bright orange/tan, many other tortoiseshell cats I have seen aren't. Her nickname is Miss Tan Toe, as she likes to stick out her foot to show it off
I've had one cat in particular, a tiger cat named Rascals that did things like that when we lived out in the country. His favorite was mice, frogs, moles, and large rabbits (often much bigger than him). I learned quickly to wear shoes when stepping out on my back porch as he would leave them on the door mat.
We put a bell on his collar, to prevent his wildlife hunts; however, it turned out to make him a target for other tomcats so we had to remove it.