For college exposure, ECNL and GAL are definitely going to be your best bets because they have built-in showcases, talent id events, playoffs where hundreds of college coaches will already be there.
Your daughter will still need to reach out to coaches and send highlights ahead of time so the recruiters can plan to watch her.
Big tournaments will also have many college coaches but again she'll need to do a lot of advance work to get on their radar beforehand.
The other factor when choosing a club is to look at how many players are committing to colleges each year from that club. Relationships between the club and college coaches, former players, can all play a role in getting recruited. These relationships can help get your daughter onto the coaches radar which is half the battle. After that it's up to the player.