Is your lone female character in a sea of males having a hard time coming across on paper as the unique, complex individual that she is in your head? Consider adding more females* to the cast to relieve pressure on both character and writer. Being a stereotype is a burden, but being a "perfectly" balanced amalgam of half the human population is way freaking harder.
*Definitely more than one. Preferably more than two. If adding more than three seems daunting, then I reiterate: half the human population.