Daenerys was made to destroy things in fire and blood, so she'll be as much in her element as a fantasy queen in a high tech setting can be. You'll find her in:

* Aerial support. Expect clever maneuvers mixed in with rampant robot destruction. She will rope anyone, possibly multiple anyones in to help her if they seem useful from above. Need a dragon rescue or assist? She's there. I'm also open to team-ups.
* I also plan to have an explosion/shrapnel accident transpire, injuring Drogon. He'll be okay, but she'll need to land at some point and try to pull something out of him. At which point she may need some cover!! Drogon can't breathe fire at things and sit still to have metal pulled out of him at the same time.
* Lastly, pulling things out of your literally hot-blooded dragon results in some burned fingers. Some bandaging post-fight would be ideal!