Her evolution is utterly well done.
She goes from cute, inexperienced little girl/budding bard
to still cute slightly less inexperienced young woman/unwitting Amazon Princess/bard
to extremely cute Amazon Princess/Bard who can take better care of herself, with a lot more experience and wisdom
to spiritual pacifist
who will still defend her friends
and then we have this thing of beauty that happened
and then this happened
and by the time she’s a full warrior, dubbed the Battling Bard of Potidaeia
she’s an entirely different person, ready to do whatever it takes to serve the greater good and survive.
But the whole time she’s completely, utterly human.
Yes, the series is called Xena: Warrior Princess, but it’s about Gabrielle, too.