Actually, the kill on sight mentality would be something Hawwah and Hector of Troy share. Given that she works well against spears and from what I can see their parameters are actually somewhat even, I could see her giving him a legitmate fight. Heck, he even hangs out in the forest, so that might even give her the edge she needs to be a threat.

That could be how she eventually learns about Hector of Troy and Paris of Troy being brothers. She does some foresty reconnaissance when she finds and gets into a fight with Hector (perhaps not for the first time). Paris is following her because he's annoyingly persistent, watches for a bit, and then intervenes, either directly revealing his and Hector's relationship or giving enough clues that Hawwah comes to the conclusion herself.

Even if that doesn't work, I've decided I want a Hector vs. Hawwah fight. Need some way to show she ain't useless in combat.