Now, find out who has a team that will not go dark next year. Chances are, that team is not currently playing 14U because if they were, they will more than likely have girls going into 9th grade next Fall and need to be wiped off your list.
^^^^^Make sure that you understand this. RT, you also need to understand that your DD's birthdate/grade combo is such that SHE will be "one of THOSE players (lol)" who forces a team into a dark period early in her second year of 14u, b/c she will be a frosh. And so...some more considerations:
In your OP, you mention that DD wants to make varsity as a freshman. By that time if she has the tools to make V as a frosh, there is no reason to return to 14u AFTER that HS season. Even though she would be eligible by birthdate, it makes no sense to finish a Varsity (18u) season and then go play down at 14u. ***Generalizing of course. Not all programs are equal. School size, competition, etc vs TB scene yaddayadda. Weigh it all out. *** But, generally if she is a frosh/jv team type of player she may want to return to 14U TB after her frosh season, while if she is V material and can hang with a decent V schedule as a frosh then consider that her first year of 14u TB may be just a single year stepping stone to 16u TB.
Just a little more to chew on--may fuel more discussion and opinions.
Good Luck!