What is my characters attitude on stage ?

Alice can be young and fiery, but can also feel quite weak and unconfident depending on the situation. I think round her boss Mark she can feel like she has more authority than she does so can be quite subtly cheeky, but around others she can feel quite insecure and irrelevant as she realises she's a twenty something woman with an unsatisfactory degree, no sense of style and working for a "underpaid and overqualified" solicitor who snorts cocaine and pays for sex, but her confidence at times undermines her lack of her capability.