Harleen's over in District 4 discovering that even though they may have brainwashed the Harley Quinn out of her, she still fights like her.

She's more inclined to avoid conflict if she can but if it presents itself she'll find herself flying into a fight legs and arms wild, weapons flailed and dodging like she's dancing. It's so much fun being a puppet.

To this extent she'll either be sneaking down below the Rebels supply stock to try and blow it up, or attacking head on as a distraction (Much to her own panic)

Just depends on who wants to interact with her.