"Just wanted to see what my fellow posters think about this. I know for my 10 year old daughter results dont matter just as long as shes improving and doing it right.What age do results really matter if the plan is to become a money making pro??"
Given your question, "results" would matter when your daughter can compete and defeat professional level players, at least the level of professional players required to be a "money making pro," which I assume you mean actually making a living at tennis (better chance winning your state lottery of course but that's another discussion). Talk about the 80/20 rule; you better be one of the handful of best players on this planet to "make a living at it."
However, if that's the goal, then "results" are by-products and shouldn't be the focus. The focus is how best to prepare your daughter (physically, mentally, technique, form, etc.) to be the best player she can be (taking into consideration the reality of life; what you can do; how much $ you can spend; etc.) so that she can try to compete at the professional level (when will that be? when she starts winning even entry level satellite professional tournaments, etc.).
I come from a family with pro athletes (dad played in the NBA; I played Div. I) and it doesn't matter what sport, the best in the world in a given sport have a very unique mixture of ingredients which no one "completely" understands (and, of yea, there's luck).
Only you know your daughter so do the best you can and let the marbles fall where they may . . . the creme generally rises to the top. All the money in the world can't buy a champion b/c some of the key ingredients can't be bought
(hence, don't forget where Venus/Serena grew up and in that neighborhood, you are born with "hunger," and that alone can take you a long way; of course, they are talented also, but just making a point).
This sport of junior tennis is very morbid. I feel for you as I have a 12 yr. old daughter that loves this sport (plays at the sectional/nat'l level) but I caution you against any focus on the professional level (not that it can't be a goal or dream but it's a by-product and it's why we have so many insane tennis parents). My daughter dreams of playing professional tennis and good for her but as parents our job is to keep the big picture in mind and, of yea, preparing our kids to have good, productive and happy lives outside of TENNIS (that day will come, even for the best on this planet). I meet so many unhappy teaching pros at local clubs making very little money (many of which were nationally ranked; dreamed of being a pro; tennis was their focal point in life, etc. - in the real world, that's what happens to many that come out of the world of junior tennis).
Sorry to ramble but I think these points are connected . . . however, I'll admit I'm not a fan of this sport and I'd have no issue if my daughter quit tomorrow
. . . so when do results matter? when you feel they matter