She is getting coaching from Michael at VRC. She is more of a single player than double player. If you really want a qualified opinion on how she plays you have to ask 15Love.
Few days ago i was playing with Minarti Timur. I met Casey and her parents. She had a chance to play with Minarti Timur and 2 other junior indonesian team gals. From my observation she is very promising , have good reflexes and defence, have a bright future in badminton.
Casey has still been getting back to speed from a back injury earlier this year. she is a physically strong player and is a well rounded player, although her primary training has been in singles.