yes, actually i also heard there is a "NA" after ありきたり, my guess is ....
she speaks so quickly(because Kimura was angry, and was running away, she was shouting at the back), so the sound was like some kind of "taking a breath" after speaking such a long sentence(in the drama, she actually speaks much longer than the extracted audio clip).
I wasn't able to listen the sentence myself, my japanese friend helped to write it down for me, too bad I didn't ask her what about the "NA" after the ありきたり
okay , it goes like this
He asked her why she chose him, she answered that because he shone like a star in the Ice-Hockey rink (Kimura is the captain of the team), he then said "what if I quit the team? then i wont be shining anymore, (will u still like me?)..."
then he started to walkaway from her, and that was the time she said that.