I can see how you might think that, but you don't have to completely change her :) I feel like part of the fun in an RP is the character development, and since it's still so early in the story you have plenty of wiggle room to build on her personality.

I actually use a little trick to build the characters in my stories, if you're interested in hearing it XD I've only shared this with one other person, so feel special~

When making my characters, I choose one positive trait and one negative trait and build the skeleton around them. It helps me make a foundation to develop them into more complex or even totally different personas. For example: here are Crow's main traits.

Positive: Carefree nature [i](i.e: fairly calm temperament and optimistic attitude)[/i]
Negative: Pride/Arrogance [i](i.e: bragging and condescending/sarcastic remarks)[/i]

The combination makes him seem extremely childish even though he's really quite clever, which makes him fun to write about XD Anyway, I use these basic concepts as the foundation for his personality and build on them as I go, adding or removing smaller traits depending on the direction of the story and his reactions to different situations, but keeping the underlying base for his character. I don't know if my method works for everyone, but it can definitely be helpful if you want to add some fun character development into the story :)