I think this is at best a very difficult question. Are the best keepers the keepers on the top rated teams? Sometimes those keepers don't get a lot of work because the defense is so good.
I will tell you that my daughter's most recent evaluation from LAGSD covered these areas as respects to Technical: Set Position; Catching; Diving/Falling; Diving Extension; Punching; Distribution punt/drop kick; Goal kick; Receiving High Balls; Receiving Low Balls; Field Skills; Shot Handling. Then for tactical it included: 1 v 1/breakaways; Angels; Coming Off Line; Controlling Game Temp0; Communication; Anticipation; Intercepting Crosses. Has your daughter received an evaluation that covers these areas? If not, it may be worth it to get one from her keeper coach.
I know that all of the SDDA teams have been eliminated from National Cup. Coast has 2 teams left and the rest are SCDSL Flight 1. If I was going to evaluate my kid I would start with SCDSL Flight 1 team goalies. Good luck.