If you really want to explore your options don't wait for tryouts. See what teams are around you with coaches you might be able to work with and reach out to the coach or the manager. Most teams will let you come to a practice or two to see what it's like. If they are playing futsal or indoor you could guest play with them then or during a preseason tournament coming up soon. Tryouts may help coaches evaluate players but they don't give parents or players any insight into the coach or the team. You need to go to a couple practices and ideally have an opportunity to guest with them to really get a feel for the team and how DD would fit.

In other countries clubs usually span all ages and kids often grow up playing and rooting for the same local club. Do any local DMV youth clubs also have lower level adult pro (or semipro) teams for their players to aspire to reach other than that CCL 23 league which isn't really aspirational? Obviously DC United has a pro team but who else. Does the NOVA FC USL team have a youth club? NISA Bobcats? Women's teams?