Kaika was whistling until...well, until she arrived to class and noticed people were leaving their wands with Professor Bunbury.
Er, what? why? and with Bunbury? That was...clearly something she didn't want to do, but did she have a choice? Yes. Not going to class.

However, she had to. Well, at least Bunbury had a wand, unlike Melita, and she wouldn't take their wand.
As she grew closer and closer to the entrance, she took out her wand, Bunbury better not do anything to it, it was rather new.
"Hello Professor, it's a nice day, right?" if you liked the cold. Kaika smiled as she left her 'Redwood, Phoenix Feather core, 9 3/4 inches. Sturdy' wand with Bunbury and proceeded to take a seat.