I like your idea @pointdexter. We're gonna have to tweak a little bit locations and timeframe. But how about, and somehow, the UCAS military got in charge of the clean up in the aftermath of the corporate skirmish that burn down Kachina's community. Of course they would send in new recruits for it was just a cleaning job. Rolen, freshly enrolled, may have found the wounded Kachina. Only issue, she didn't want to be found, she needed to have disappeared in the Helicopter's destruction. He had to report her however, and make a choice. Few words were exchanged, but Rolen quickly understood the massacre that had happened. He threw her his water flask and turned around, never ever mentioning what had happened.
5+ years later. Rolen embraced the Shadows but needs job. A call from his new fixer, a meet. Several runner are there already, the Johnson is gonna make and hire a team from various sources. When an Amerindian women enters, heads turns in her direction. Her body language calls for attention, a confident and intimidating posture shows she's not to be messed with.
Only Rolen recognizes her, she hasn't change. She too remembers the boy's face, a persistent image from unwanted memories, the day her life had changed.
The rest is history...
How about that? Rolen, through his action (or lack of), saved Kachina from Martial Court. The two reunited as the soldier just turned to the shadows. They knew nothing about each others respected one another. They've teamed up since.