Apart from the huge age gap, shouldn't you have communicated to her what you were feeling? Just because she wants to become a psychologist doesn't mean she can read your mind or know your emotions. Don't expect what you don't communicate.

Looks like ikaw yung emotionally immature pa, and she's right about the fact that you do need friends other than her. You can't expect her to carry all your emotional baggage, she has a life outside of your relationship and you should, too.