Not a single kid from that RSL team may make the Royals GA U13 team. "Talent" consolidates at U13 and up; prior, kids play more locally with local clubs. CCV, for girls, is always strong for youngers and then Del Sol & RSL (mainly) strip it clean.
Put it this way, Royals U14 and up have a very low % of players that have come from RSL. U13 (for Royals) is a bit of an anomaly, but 08 is not a strong age group in the valley.
If you have girls from U8 and can't develop some of them to make your GA U13 team then something seems missing.