Kazia allowed herself to be knocked down by Serafina. Had it been anyone else Kazia would have taken it as an attack of some sort and she would have responded - probably violently - but Serafina was a friend. A little roughhousing was not out of the place at all - the fact that this looked really strange to the bystanders notwithstanding, of course. 

As Serafina talked about the foreigners, Kazia couldn't help but be a little excited. It was always good to meet new magical girls - in a world where magic was unknown it was nice to meet other members of the really small number of magical girls compared to the rest of humanity. They already shared the common bond of "being a magical girl", that alone should be basis for getting along, no?  

"Well I guess there's only one way to find out if they're learning the ropes or not." Kazia commented, deciding to play on Serafina's occasionally disturbing but mostly likable patriotism. Much like Serafina's love of Poland was obvious to Kazia, it was no secret to Serafina that Kazia hoped for cooperation with other magical girls. No doubt she would figure out Kazia intended to approach them and talk of potentially making a team.