Do not leave this as is. You cannot have two tickets in the same name on the same flight. That is a direct violation of the COC and one or both of the tickets will wind up be cancelled with or without notice.

Change the award ticket to your daughter and be done with it. She doesn't need the SM and you do.

The situation with a passenger who wants or needs an extra empty seat is entirely different. In that case, you call in and DL issues a separate ticket under a dummy name associated with your ticket.