It was just like Siren said, wasn't it?! If these people didn't have something to hide, or some kind of will to impose on everyone else, then they wouldn't be defending their fortress so vehemently!! The barrier being raised was a little intimidating... but she'd push through it!! For the sake of everyone like her...!!
It was easy enough for Siren Splash to find herself on autopilot. These guards may have had some kind of voice clip or something, but they were the same as scary, wild viruses, weren't they? She'd done that a million times. She'd operated her Navi- her- her- her...? It was just like before, but she wasn't there, she was here, inside instead of outside and the one firing endlessly on her targets and feeling the most focused she'd ever felt, no, no, was this right? She wasn't a Navi- why was she fighting-? Keep fighting, keep fighting, keep fighting...
Siren was having a difficult time comprehending what was going through her host's mind, and she pushed herself to repress it. This human could have a mental breakdown and die, for all she cared - all that she needed to do was last until their job was finished. They'd even managed to give Mega Man the slip - so. Just. Listen. And keep fighting.
Siren Splash, in her panic, tossed out an Ice Spin Battle Card, which was enough to cut her a zig-zag-y path through the Satella Police Wizards attacking her. It was almost impressive that she was still able to keep fighting well even while under so much duress. Like the motions had been burned into her brain, inexplicably.
(She was doing better than when she was Operating L------, how pathetic-)