we used them on our kids also. My youngest was the first to actually get up on them and ski. His older bro's (they were 4,5,7) gave up.
Here's my suggestions
1. DO NOT tie the rope off to the boat. Hold the rope in your hand, and let go when she goes down. Need min 3 people.
2. she'll get up around 5/10 mph, when the boat starts moving she'll be up..
3. Great idea pulling her on the grass.
4. Have her get used to the sitting postion w/ skis & jacket in the pool.
5. When ready, find a quite & private cove.
Enjoy, those are GREAT TIMES.............