Take your time! You are making something great, so don't feel pressured to put out something when it's not ready. As for Karelia, I think she'd make a great addition to the game (she's a favorite in my book). Or if you're asking what her personality would be, as in good, bad, or mischievous, I think mischievous would suit her well in my opinion, or maybe scary? I really do look forward to when this comes out. For a first time developer, you are doing fantastic! Keep up the good work!