She was also a Lt Cmdr, so is probably the head of a group of counselors for a ship that size. Just like Dr Crusher is a chief medical officer and the primary doc on board, but not the only doc.
It might be like how there is only ever one helmsman on duty at any given time. Sure, there are dozens of crew members who are trained for the task, and the captain can order any of them to take over as helmsman when needed. But there is only ever one person at a time who is considered the helmsman.
She was also a Lt Cmdr, so is probably the head of a group of counselors for a ship that size. Just like Dr Crusher is a chief medical officer and the primary doc on board, but not the only doc.
It might be like how there is only ever one helmsman on duty at any given time. Sure, there are dozens of crew members who are trained for the task, and the captain can order any of them to take over as helmsman when needed. But there is only ever one person at a time who is considered the helmsman.