I love her name. It took me a little while of repeating her name in puzzlement before I realized it was kind of an onomotopeia thing like ker plop. kuh flecken! and I swear I'm not even smoking anything.At first I thought "hey, maybe its some sort of Norweigen/Innuit name" but then I got into the rhythm of it.
Actually, we named all of the ducks German names. Kuh is cow and flecken is spots. In Germany there is a chocolate bar that is marbled white and brown, and the name of the chocolate bar is Kuh Flecken, so that is her name.

I love the way you thought it was a sound, that is very cool.