After I posted, I did find that it's a name of a river somewhere in Italy. So that's probably what the creators meant.
Even so, it IS the Spanish word for "vegetable" and that's where my mind went first (and laughed when it did).
Still, nothing negative about Heather herself or her performance. She is doing a great job.

Not a language expert, but isn't Verdura also Italian/Sicilian for "Green?" They never mentioned Alice's ethnicity, but we'll find out soon since her dad shows up in the next episode.