Can I just say she's perfect so far? I'm sooo enjoying seeing her threads everywhere and I honestly can't believe that you're nervous about her because she seems so perfect! It's like you've been playing her forever!
As far as going over the top with her, I haven't seen that so far. I think you strike a great balance to her Disney-silliness parody while still making her balanced enough that she doesn't become a caricature.
I can't really offer advice, only stress that I am loving playing with her and can't wait to see more from her! All her threads are so much fun to stalk so far! Looking forward to her to continue to grow her CR and sing songs of encouragement to everyone grow as a character, too!