"Slim yes, though a possibility we can't rule out... It is well known that this little bugger had me sign a life changing contract as I was disembarking, dead tired from a plane... And I the first time I ever used magic at all was after I've traveled a fair distance from the airport""And here I am paying for my laziness... I just went for the nearest girl with some form of magical aptitude..."
Marza comments on the tangent the conversation took..."Oh yeah... that reminds me... I wanted to personally ask another magical girl if they ever do training... A tall order when every other magical girl seems to be Clark Kenting... I still don't understand how he manages to hide behind those so well... Hey Marza, I will give you permission to use your magic sight thing and see if anyone in the vicinity has magical aptitude...""I'm not some Smart phone app you know...""You might as well be... If there exist PDA's, Personal Digital Assistants, you fairies might as well be PMA', Personal Magical Assistants for magical girls..."
Marza sighs at this but complies as she scans their surroundings..."Well aside from Himura-san... Dark haired girl and the red-head over there together on that table, they both have magical aptitude... Also the pair of blondes over there as well... Can't tell if they're magical girls tho..."
The fairy gestures at the respective tables to which Risa's eyes inevitably turn to..."Say you know what else has a slim chance? That all four of them are NOT magical girls yet..."
Risa turns back to Himura and then to Marza..."This is actually a matter of probability... This table also seats two girls with magical aptitude and we can be sure that one of them is a magical girl... me... If we take this table as a basis then at least one girl on each of those tables is a magical girl... Say, Himura-san since you said you know many of us magical girls, do you think you can recognize anyone on those two tables wo would likely be one?"
Still Lisa this time... Likely feeling lonely and bored by now