Lacey Patel is Charlie's patient in anger management therapy.
The court sent her to therapy because she shot her boyfriend in the testicles for cheating on her.
She is the spoiled daughter of a wealthy Indian family, now residing in USA.
She is a young party girl, yet rather insecure. Most of her self-esteem is based on her looks.
It's implied at one point that she has a crush on Charlie. Once he starts revealing that he might, too, she brushes it off, saying "she's [his] patient" before leaving.