Break it down into itsy bitsy steps and back chain it. If Tiger Lilly is picking the toy up from the floor, teach her to pick it up from the floor
at your feet and hand it to you. When she fully understands how to do that and you've consistently rewarded her for it, then put the toy a little farther away (6 inches from your feet) and ask her to pick it up and hand it to you. Then, slowly, ask her to pick it up and hand it to you from farther and farther away. Don't start tossing the toy until she's consistently picking it up and bringing it to you when you place it gently on the ground several feet away. Also, is this a really exciting toy? You could try teaching her to fetch a somewhat more boring toy first (I started with a dumbbell), so she's not as tempted to try to play with it by herself.
I had NO fetch at all with Yukon and was able to clicker train it with a dumbbell using Shirley Chong's method. I was very pleased and highly recommend it:
http://www.shirleychong.com/keepers/retrieve.html