My two cents-
I taught/played at a summer session at the Brubeck Institute in Stockton, CA a few years ago when she was a student there. She definitely can play, and with some years of experience, dues and development of her own musical vocabulary I think she could develop into a great player. At the age of 18 she's early in the development process (as are most players her age) and is mostly a sum of her influences- I think finding an individual voice is yet to come for her. Pushy parents or not she has the skill & desire to succeed, it just remains to be seen what path she chooses. No doubt to me she can play, though.
(Off topic, Frank Morgan was one of the players there that summer and passed away shortly afterwards. I'm glad I got to meet him.)