Have you two tried scrunching after you brush? I brush too, but really only for detangling and clumping. Brushing does stretch out my curls too so I have to scrunch them after I brush them.

As for your roots, you could try butterfly clips to add lift.

Give it a try when you don't have anywhere to go for the day, that way if it doesn't work you can re-wet your hair and style it the way you normally do. Good luck!
No 'poo since March 2004
Vo5/Suave/White Rain - co wash
DevaCARE OneC, CK, Dove Curl Defining Styling Creme, Biolage Gelee,