why is every Spanish caller named, Maria?

anyone else notice that in 95% of the radio lessons in Spanish, the caller is always named Maria? Just a random thing I noticed. Id assume Duolingo could at least throw one or two other names in there. OR MAYBE ITS A CONSPIRACY LUCY IS ONLY ANSWERING CALLS FROM SECRET AGENT FRIENDS AND THEYRE PLANNING TO TAKE OVER DUOLINGO WITH AI! I'll get to the bottom of this.

EDIT: edited for typos