I have a different view. Asking them is one thing. Acting on it is another. But what better way to ferret out the cliques then ask an open ended question like that.
How does it generally work on your H.S. team?
In my view, Captains generally organize the girls before and after practices. Put girls on group messaging for team communication. Organize any extra-curricular events the team has. Captains should be seniors.
What I don't like: Head Coach asks the Captains who should play what positions. . . ?
How much do your Captains cross the line in to "Coaching" territory?
Team vote for Captain. NEVER!! I've seen too many popular girls who are very skilled socially, but they are immature. There is no way I would ever let them into an official leadership role. Some of the girls who do lead by example can/will fbe ignored by others because they "Kissing A$$" to the coach unless they are the absolute BEST player on the team. Other times the "Mean Girl" syndrome can happen with a few girls who are given some type of power on the team.
As far as a player "coaching" another player. Nope!!!! Not their job. If I ask them to demonstrate something, that's one thing. Taking it upon themselves is whole other animal.
In my eyes the Captain is there to be a liaison between the players and the coach and to relay information to the players from the coach. Especially on HS age teams. By the time they college a lot of the HS BS