It must be the main character in the manga!
So, she's not expecting the other party to hand over the real culprit at all. She just came here to vent her frustration and protest against her sister.
This way, after she goes back, she can have a very reasonable excuse to stay at home and not go out to the harbor without making anyone suspicious.
As long as everyone thinks she's staying home, no one will notice she's already left home to attend the manga convention.
No materials means no stand, but attending the manga convention is still a must, in fact, that's her main goal.
Thinking of this, Deep Sea North Residence waved her hand, urging Alice to leave quickly, so she could fire a few more shots to express her dissatisfaction with her sister for restricting her freedom before she arrives.
"If you want to defeat that Tyrpitz, perhaps I can help you," Alice said.
