Wow what a pretty cat! Good luck finding her a nice home. I've had two sweet little kittens "find" me on 2 separate occasions this year. I wanted to keep them both so badly! I took them to a no kill shelter instead; hope they found good homes.
have you tryed spraying "little cat" with water everytime she hissed or scratched flower? we have taught our cat to avoid doing many things by this strategy..... but be careful not to wait too long, if the cat doesnt know why its being sprayed it might try to leave