Even though he couldn't drive his jaeger, not without his drift compatible partner, it didn't mean that he'd let Gipsy Danger go without maintenance. The jaeger deserved that and so much more considering what she'd held him and his brother through. What she'd held him and Mako through. Honestly, though, he's sure if he tried that he'd be able to pilot her alone. It was one of the reasons that he'd been dragged back into the program. Piloting Gipsy Danger alone is what he'd done when he'd lost his brother.
One of the sensors within go off and he happens to look out taking note of someone he wasn't overly familiar with. That sensor gets turned off and he steps out of the cockpit and onto the platform beside it, looking down to the stranger below. He's seen Aloy on the network, he's sure, but he didn't actively know her.
Of course, he heads completely down so he's standing not that far from her after a moment," Never seen a jaeger before?"