Are you sure you are PLAYING them? Or are you hitting with them? And if you are hitting with them, are you feeding them deep groundies over and over? Or are you slice CC shortangling them, moonball one, then aggressively slice approaching them?
Very few parents allow adults to hit with their prodical kids unless some rules are maintained.
In my years, to hit with the 5.5 and better women, I wasn't to hit any short shots, come to net, or serve my best serves.....or the practice sessions are cancelled foreever.