Kataree was an normalgirl. If an average girl means being an girl who grow up in the hood with a brother who was a rising gangster, And parents on drugs as well as a kid that everyone thought was your sibling then yeah perfectly normal and it is even more normal when villains such as the Joker and hero's such as Batman get added to the equation. Yep perfectly normal.

The end of one world is only the beginning of a new one. [Daryl Dixon]